diff --git a/src/accounts/templates/accounts/user_detail.html b/src/accounts/templates/accounts/user_detail.html
index 4821af27..abfa3cb2 100644
--- a/src/accounts/templates/accounts/user_detail.html
+++ b/src/accounts/templates/accounts/user_detail.html
@@ -4,8 +4,13 @@
 
 
 {% block head_js %}
-  {% include "pizza-chart.html" with chart_data=type_count chart_div="collabs" chart_height=300 %}
-  {% include "pizza-chart.html" with chart_data=list_activity chart_div="collabs2" chart_height=300 %}
+  <script src="{{ STATIC_URL }}third-party/highcharts/js/highcharts.js"></script>
+
+  {% trans "Messages" as group_collabs %}
+  {% trans "Contributions" as type_collabs %}
+
+  {% include "pizza-chart.html" with chart_data=type_count chart_div="collabs" chart_height=300 name=type_collabs %}
+  {% include "pizza-chart.html" with chart_data=list_activity chart_div="collabs2" chart_height=300 name=group_collabs %}
 {% endblock %}
 
 {% block main-content %}
diff --git a/src/static/third-party/highcharts/js/highcharts.js b/src/static/third-party/highcharts/js/highcharts.js
new file mode 100644
index 00000000..ba9a937d
--- /dev/null
+++ b/src/static/third-party/highcharts/js/highcharts.js
@@ -0,0 +1,285 @@
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+this.getLabelSides(),l=k[0],k=k[1],e=e.plotLeft,m=e+d.len,j=(d=d.ticks[j[a+(f?1:-1)]])&&d.label.xy&&d.label.xy.x+d.getLabelSides()[f?0:1];f&&!i||g&&i?h+l<e&&(h=e-l,d&&h+k>j&&(c=!1)):h+k>m&&(h=m-k,d&&h+l<j&&(c=!1));b.x=h}return c},getPosition:function(a,b,c,d){var e=this.axis,f=e.chart,g=d&&f.oldChartHeight||f.chartHeight;return{x:a?e.translate(b+c,null,null,d)+e.transB:e.left+e.offset+(e.opposite?(d&&f.oldChartWidth||f.chartWidth)-e.right-e.left:0),y:a?g-e.bottom+e.offset-(e.opposite?e.height:0):
+g-e.translate(b+c,null,null,d)-e.transB}},getLabelPosition:function(a,b,c,d,e,f,g,h){var i=this.axis,j=i.transA,k=i.reversed,l=i.staggerLines,m=i.chart.renderer.fontMetrics(e.style.fontSize).b,p=e.rotation,a=a+e.x-(f&&d?f*j*(k?-1:1):0),b=b+e.y-(f&&!d?f*j*(k?1:-1):0);p&&i.side===2&&(b-=m-m*V(p*Ua));!u(e.y)&&!p&&(b+=m-c.getBBox().height/2);l&&(b+=g/(h||1)%l*(i.labelOffset/l));return{x:a,y:b}},getMarkPath:function(a,b,c,d,e,f){return f.crispLine(["M",a,b,"L",a+(e?0:-c),b+(e?c:0)],d)},render:function(a,
+b,c){var d=this.axis,e=d.options,f=d.chart.renderer,g=d.horiz,h=this.type,i=this.label,j=this.pos,k=e.labels,l=this.gridLine,m=h?h+"Grid":"grid",p=h?h+"Tick":"tick",q=e[m+"LineWidth"],n=e[m+"LineColor"],B=e[m+"LineDashStyle"],r=e[p+"Length"],m=e[p+"Width"]||0,u=e[p+"Color"],t=e[p+"Position"],p=this.mark,s=k.step,w=!0,x=d.tickmarkOffset,E=this.getPosition(g,j,x,b),H=E.x,E=E.y,C=g&&H===d.pos+d.len||!g&&E===d.pos?-1:1,y=d.staggerLines;this.isActive=!0;if(q){j=d.getPlotLinePath(j+x,q*C,b,!0);if(l===v){l=
+{stroke:n,"stroke-width":q};if(B)l.dashstyle=B;if(!h)l.zIndex=1;if(b)l.opacity=0;this.gridLine=l=q?f.path(j).attr(l).add(d.gridGroup):null}if(!b&&l&&j)l[this.isNew?"attr":"animate"]({d:j,opacity:c})}if(m&&r)t==="inside"&&(r=-r),d.opposite&&(r=-r),b=this.getMarkPath(H,E,r,m*C,g,f),p?p.animate({d:b,opacity:c}):this.mark=f.path(b).attr({stroke:u,"stroke-width":m,opacity:c}).add(d.axisGroup);if(i&&!isNaN(H))i.xy=E=this.getLabelPosition(H,E,i,g,k,x,a,s),this.isFirst&&!this.isLast&&!o(e.showFirstLabel,
+1)||this.isLast&&!this.isFirst&&!o(e.showLastLabel,1)?w=!1:!y&&g&&k.overflow==="justify"&&!this.handleOverflow(a,E)&&(w=!1),s&&a%s&&(w=!1),w&&!isNaN(E.y)?(E.opacity=c,i[this.isNew?"attr":"animate"](E),this.isNew=!1):i.attr("y",-9999)},destroy:function(){Ka(this,this.axis)}};vb.prototype={render:function(){var a=this,b=a.axis,c=b.horiz,d=(b.pointRange||0)/2,e=a.options,f=e.label,g=a.label,h=e.width,i=e.to,j=e.from,k=u(j)&&u(i),l=e.value,m=e.dashStyle,p=a.svgElem,q=[],n,B=e.color,O=e.zIndex,t=e.events,
+v=b.chart.renderer;b.isLog&&(j=ma(j),i=ma(i),l=ma(l));if(h){if(q=b.getPlotLinePath(l,h),d={stroke:B,"stroke-width":h},m)d.dashstyle=m}else if(k){if(j=r(j,b.min-d),i=J(i,b.max+d),q=b.getPlotBandPath(j,i,e),d={fill:B},e.borderWidth)d.stroke=e.borderColor,d["stroke-width"]=e.borderWidth}else return;if(u(O))d.zIndex=O;if(p)if(q)p.animate({d:q},null,p.onGetPath);else{if(p.hide(),p.onGetPath=function(){p.show()},g)a.label=g=g.destroy()}else if(q&&q.length&&(a.svgElem=p=v.path(q).attr(d).add(),t))for(n in e=
+function(b){p.on(b,function(c){t[b].apply(a,[c])})},t)e(n);if(f&&u(f.text)&&q&&q.length&&b.width>0&&b.height>0){f=x({align:c&&k&&"center",x:c?!k&&4:10,verticalAlign:!c&&k&&"middle",y:c?k?16:10:k?6:-4,rotation:c&&!k&&90},f);if(!g)a.label=g=v.text(f.text,0,0,f.useHTML).attr({align:f.textAlign||f.align,rotation:f.rotation,zIndex:O}).css(f.style).add();b=[q[1],q[4],o(q[6],q[1])];q=[q[2],q[5],o(q[7],q[2])];c=Ja(b);k=Ja(q);g.align(f,!1,{x:c,y:k,width:ua(b)-c,height:ua(q)-k});g.show()}else g&&g.hide();return a},
+destroy:function(){ga(this.axis.plotLinesAndBands,this);delete this.axis;Ka(this)}};Mb.prototype={destroy:function(){Ka(this,this.axis)},render:function(a){var b=this.options,c=b.format,c=c?Ca(c,this):b.formatter.call(this);this.label?this.label.attr({text:c,visibility:"hidden"}):this.label=this.axis.chart.renderer.text(c,0,0,b.useHTML).css(b.style).attr({align:this.textAlign,rotation:b.rotation,visibility:"hidden"}).add(a)},setOffset:function(a,b){var c=this.axis,d=c.chart,e=d.inverted,f=this.isNegative,
+g=c.translate(this.percent?100:this.total,0,0,0,1),c=c.translate(0),c=M(g-c),h=d.xAxis[0].translate(this.x)+a,i=d.plotHeight,f={x:e?f?g:g-c:h,y:e?i-h-b:f?i-g-c:i-g,width:e?c:b,height:e?b:c};if(e=this.label)e.align(this.alignOptions,null,f),f=e.alignAttr,e.attr({visibility:this.options.crop===!1||d.isInsidePlot(f.x,f.y)?W?"inherit":"visible":"hidden"})}};eb.prototype={defaultOptions:{dateTimeLabelFormats:{millisecond:"%H:%M:%S.%L",second:"%H:%M:%S",minute:"%H:%M",hour:"%H:%M",day:"%e. %b",week:"%e. %b",
+month:"%b '%y",year:"%Y"},endOnTick:!1,gridLineColor:"#C0C0C0",labels:G,lineColor:"#C0D0E0",lineWidth:1,minPadding:0.01,maxPadding:0.01,minorGridLineColor:"#E0E0E0",minorGridLineWidth:1,minorTickColor:"#A0A0A0",minorTickLength:2,minorTickPosition:"outside",startOfWeek:1,startOnTick:!1,tickColor:"#C0D0E0",tickLength:5,tickmarkPlacement:"between",tickPixelInterval:100,tickPosition:"outside",tickWidth:1,title:{align:"middle",style:{color:"#4d759e",fontWeight:"bold"}},type:"linear"},defaultYAxisOptions:{endOnTick:!0,
+gridLineWidth:1,tickPixelInterval:72,showLastLabel:!0,labels:{x:-8,y:3},lineWidth:0,maxPadding:0.05,minPadding:0.05,startOnTick:!0,tickWidth:0,title:{rotation:270,text:"Values"},stackLabels:{enabled:!1,formatter:function(){return Aa(this.total,-1)},style:G.style}},defaultLeftAxisOptions:{labels:{x:-8,y:null},title:{rotation:270}},defaultRightAxisOptions:{labels:{x:8,y:null},title:{rotation:90}},defaultBottomAxisOptions:{labels:{x:0,y:14},title:{rotation:0}},defaultTopAxisOptions:{labels:{x:0,y:-5},
+title:{rotation:0}},init:function(a,b){var c=b.isX;this.horiz=a.inverted?!c:c;this.xOrY=(this.isXAxis=c)?"x":"y";this.opposite=b.opposite;this.side=this.horiz?this.opposite?0:2:this.opposite?1:3;this.setOptions(b);var d=this.options,e=d.type;this.labelFormatter=d.labels.formatter||this.defaultLabelFormatter;this.userOptions=b;this.minPixelPadding=0;this.chart=a;this.reversed=d.reversed;this.zoomEnabled=d.zoomEnabled!==!1;this.categories=d.categories||e==="category";this.names=[];this.isLog=e==="logarithmic";
+this.isDatetimeAxis=e==="datetime";this.isLinked=u(d.linkedTo);this.tickmarkOffset=this.categories&&d.tickmarkPlacement==="between"?0.5:0;this.ticks={};this.minorTicks={};this.plotLinesAndBands=[];this.alternateBands={};this.len=0;this.minRange=this.userMinRange=d.minRange||d.maxZoom;this.range=d.range;this.offset=d.offset||0;this.stacks={};this.oldStacks={};this.stackExtremes={};this.min=this.max=null;var f,d=this.options.events;pa(this,a.axes)===-1&&(a.axes.push(this),a[c?"xAxis":"yAxis"].push(this));
+this.series=this.series||[];if(a.inverted&&c&&this.reversed===v)this.reversed=!0;this.removePlotLine=this.removePlotBand=this.removePlotBandOrLine;for(f in d)K(this,f,d[f]);if(this.isLog)this.val2lin=ma,this.lin2val=fa},setOptions:function(a){this.options=x(this.defaultOptions,this.isXAxis?{}:this.defaultYAxisOptions,[this.defaultTopAxisOptions,this.defaultRightAxisOptions,this.defaultBottomAxisOptions,this.defaultLeftAxisOptions][this.side],x(L[this.isXAxis?"xAxis":"yAxis"],a))},update:function(a,
+b){var c=this.chart,a=c.options[this.xOrY+"Axis"][this.options.index]=x(this.userOptions,a);this.destroy(!0);this._addedPlotLB=this.userMin=this.userMax=v;this.init(c,s(a,{events:v}));c.isDirtyBox=!0;o(b,!0)&&c.redraw()},remove:function(a){var b=this.chart,c=this.xOrY+"Axis";n(this.series,function(a){a.remove(!1)});ga(b.axes,this);ga(b[c],this);b.options[c].splice(this.options.index,1);n(b[c],function(a,b){a.options.index=b});this.destroy();b.isDirtyBox=!0;o(a,!0)&&b.redraw()},defaultLabelFormatter:function(){var a=
+this.axis,b=this.value,c=a.categories,d=this.dateTimeLabelFormat,e=L.lang.numericSymbols,f=e&&e.length,g,h=a.options.labels.format,a=a.isLog?b:a.tickInterval;if(h)g=Ca(h,this);else if(c)g=b;else if(d)g=Ya(d,b);else if(f&&a>=1E3)for(;f--&&g===v;)c=Math.pow(1E3,f+1),a>=c&&e[f]!==null&&(g=Aa(b/c,-1)+e[f]);g===v&&(g=b>=1E3?Aa(b,0):Aa(b,-1));return g},getSeriesExtremes:function(){var a=this,b=a.chart;a.hasVisibleSeries=!1;a.dataMin=a.dataMax=null;a.stackExtremes={};a.buildStacks();n(a.series,function(c){if(c.visible||
+!b.options.chart.ignoreHiddenSeries){var d;d=c.options.threshold;var e;a.hasVisibleSeries=!0;a.isLog&&d<=0&&(d=null);if(a.isXAxis){if(d=c.xData,d.length)a.dataMin=J(o(a.dataMin,d[0]),Ja(d)),a.dataMax=r(o(a.dataMax,d[0]),ua(d))}else{c.getExtremes();e=c.dataMax;c=c.dataMin;if(u(c)&&u(e))a.dataMin=J(o(a.dataMin,c),c),a.dataMax=r(o(a.dataMax,e),e);if(u(d))if(a.dataMin>=d)a.dataMin=d,a.ignoreMinPadding=!0;else if(a.dataMax<d)a.dataMax=d,a.ignoreMaxPadding=!0}}})},translate:function(a,b,c,d,e,f){var g=
+this.len,h=1,i=0,j=d?this.oldTransA:this.transA,d=d?this.oldMin:this.min,k=this.minPixelPadding,e=(this.options.ordinal||this.isLog&&e)&&this.lin2val;if(!j)j=this.transA;c&&(h*=-1,i=g);this.reversed&&(h*=-1,i-=h*g);b?(a=a*h+i,a-=k,a=a/j+d,e&&(a=this.lin2val(a))):(e&&(a=this.val2lin(a)),f==="between"&&(f=0.5),a=h*(a-d)*j+i+h*k+(ra(f)?j*f*this.pointRange:0));return a},toPixels:function(a,b){return this.translate(a,!1,!this.horiz,null,!0)+(b?0:this.pos)},toValue:function(a,b){return this.translate(a-
+(b?0:this.pos),!0,!this.horiz,null,!0)},getPlotLinePath:function(a,b,c,d){var e=this.chart,f=this.left,g=this.top,h,i,j,a=this.translate(a,null,null,c),k=c&&e.oldChartHeight||e.chartHeight,l=c&&e.oldChartWidth||e.chartWidth,m;h=this.transB;c=i=t(a+h);h=j=t(k-a-h);if(isNaN(a))m=!0;else if(this.horiz){if(h=g,j=k-this.bottom,c<f||c>f+this.width)m=!0}else if(c=f,i=l-this.right,h<g||h>g+this.height)m=!0;return m&&!d?null:e.renderer.crispLine(["M",c,h,"L",i,j],b||0)},getPlotBandPath:function(a,b){var c=
+this.getPlotLinePath(b),d=this.getPlotLinePath(a);d&&c?d.push(c[4],c[5],c[1],c[2]):d=null;return d},getLinearTickPositions:function(a,b,c){for(var d,b=ia(P(b/a)*a),c=ia(wa(c/a)*a),e=[];b<=c;){e.push(b);b=ia(b+a);if(b===d)break;d=b}return e},getLogTickPositions:function(a,b,c,d){var e=this.options,f=this.len,g=[];if(!d)this._minorAutoInterval=null;if(a>=0.5)a=t(a),g=this.getLinearTickPositions(a,b,c);else if(a>=0.08)for(var f=P(b),h,i,j,k,l,e=a>0.3?[1,2,4]:a>0.15?[1,2,4,6,8]:[1,2,3,4,5,6,7,8,9];f<
+c+1&&!l;f++){i=e.length;for(h=0;h<i&&!l;h++)j=ma(fa(f)*e[h]),j>b&&(!d||k<=c)&&g.push(k),k>c&&(l=!0),k=j}else if(b=fa(b),c=fa(c),a=e[d?"minorTickInterval":"tickInterval"],a=o(a==="auto"?null:a,this._minorAutoInterval,(c-b)*(e.tickPixelInterval/(d?5:1))/((d?f/this.tickPositions.length:f)||1)),a=ob(a,null,nb(a)),g=Na(this.getLinearTickPositions(a,b,c),ma),!d)this._minorAutoInterval=a/5;if(!d)this.tickInterval=a;return g},getMinorTickPositions:function(){var a=this.options,b=this.tickPositions,c=this.minorTickInterval,
+d=[],e;if(this.isLog){e=b.length;for(a=1;a<e;a++)d=d.concat(this.getLogTickPositions(c,b[a-1],b[a],!0))}else if(this.isDatetimeAxis&&a.minorTickInterval==="auto")d=d.concat(Eb(Cb(c),this.min,this.max,a.startOfWeek)),d[0]<this.min&&d.shift();else for(b=this.min+(b[0]-this.min)%c;b<=this.max;b+=c)d.push(b);return d},adjustForMinRange:function(){var a=this.options,b=this.min,c=this.max,d,e=this.dataMax-this.dataMin>=this.minRange,f,g,h,i,j;if(this.isXAxis&&this.minRange===v&&!this.isLog)u(a.min)||u(a.max)?
+this.minRange=null:(n(this.series,function(a){i=a.xData;for(g=j=a.xIncrement?1:i.length-1;g>0;g--)if(h=i[g]-i[g-1],f===v||h<f)f=h}),this.minRange=J(f*5,this.dataMax-this.dataMin));if(c-b<this.minRange){var k=this.minRange;d=(k-c+b)/2;d=[b-d,o(a.min,b-d)];if(e)d[2]=this.dataMin;b=ua(d);c=[b+k,o(a.max,b+k)];if(e)c[2]=this.dataMax;c=Ja(c);c-b<k&&(d[0]=c-k,d[1]=o(a.min,c-k),b=ua(d))}this.min=b;this.max=c},setAxisTranslation:function(a){var b=this.max-this.min,c=0,d,e=0,f=0,g=this.linkedParent,h=this.transA;
+if(this.isXAxis)g?(e=g.minPointOffset,f=g.pointRangePadding):n(this.series,function(a){var g=a.pointRange,h=a.options.pointPlacement,l=a.closestPointRange;g>b&&(g=0);c=r(c,g);e=r(e,ea(h)?0:g/2);f=r(f,h==="on"?0:g);!a.noSharedTooltip&&u(l)&&(d=u(d)?J(d,l):l)}),g=this.ordinalSlope&&d?this.ordinalSlope/d:1,this.minPointOffset=e*=g,this.pointRangePadding=f*=g,this.pointRange=J(c,b),this.closestPointRange=d;if(a)this.oldTransA=h;this.translationSlope=this.transA=h=this.len/(b+f||1);this.transB=this.horiz?
+this.left:this.bottom;this.minPixelPadding=h*e},setTickPositions:function(a){var b=this,c=b.chart,d=b.options,e=b.isLog,f=b.isDatetimeAxis,g=b.isXAxis,h=b.isLinked,i=b.options.tickPositioner,j=d.maxPadding,k=d.minPadding,l=d.tickInterval,m=d.minTickInterval,p=d.tickPixelInterval,q,aa=b.categories;h?(b.linkedParent=c[g?"xAxis":"yAxis"][d.linkedTo],c=b.linkedParent.getExtremes(),b.min=o(c.min,c.dataMin),b.max=o(c.max,c.dataMax),d.type!==b.linkedParent.options.type&&ka(11,1)):(b.min=o(b.userMin,d.min,
+b.dataMin),b.max=o(b.userMax,d.max,b.dataMax));if(e)!a&&J(b.min,o(b.dataMin,b.min))<=0&&ka(10,1),b.min=ia(ma(b.min)),b.max=ia(ma(b.max));if(b.range&&(b.userMin=b.min=r(b.min,b.max-b.range),b.userMax=b.max,a))b.range=null;b.beforePadding&&b.beforePadding();b.adjustForMinRange();if(!aa&&!b.usePercentage&&!h&&u(b.min)&&u(b.max)&&(c=b.max-b.min)){if(!u(d.min)&&!u(b.userMin)&&k&&(b.dataMin<0||!b.ignoreMinPadding))b.min-=c*k;if(!u(d.max)&&!u(b.userMax)&&j&&(b.dataMax>0||!b.ignoreMaxPadding))b.max+=c*j}b.min===
+b.max||b.min===void 0||b.max===void 0?b.tickInterval=1:h&&!l&&p===b.linkedParent.options.tickPixelInterval?b.tickInterval=b.linkedParent.tickInterval:(b.tickInterval=o(l,aa?1:(b.max-b.min)*p/r(b.len,p)),!u(l)&&b.len<p&&!this.isRadial&&(q=!0,b.tickInterval/=4));g&&!a&&n(b.series,function(a){a.processData(b.min!==b.oldMin||b.max!==b.oldMax)});b.setAxisTranslation(!0);b.beforeSetTickPositions&&b.beforeSetTickPositions();if(b.postProcessTickInterval)b.tickInterval=b.postProcessTickInterval(b.tickInterval);
+if(b.pointRange)b.tickInterval=r(b.pointRange,b.tickInterval);if(!l&&b.tickInterval<m)b.tickInterval=m;if(!f&&!e&&!l)b.tickInterval=ob(b.tickInterval,null,nb(b.tickInterval),d);b.minorTickInterval=d.minorTickInterval==="auto"&&b.tickInterval?b.tickInterval/5:d.minorTickInterval;b.tickPositions=a=d.tickPositions?[].concat(d.tickPositions):i&&i.apply(b,[b.min,b.max]);if(!a)!b.ordinalPositions&&(b.max-b.min)/b.tickInterval>r(2*b.len,200)&&ka(19,!0),a=f?(b.getNonLinearTimeTicks||Eb)(Cb(b.tickInterval,
+d.units),b.min,b.max,d.startOfWeek,b.ordinalPositions,b.closestPointRange,!0):e?b.getLogTickPositions(b.tickInterval,b.min,b.max):b.getLinearTickPositions(b.tickInterval,b.min,b.max),q&&a.splice(1,a.length-2),b.tickPositions=a;if(!h)e=a[0],f=a[a.length-1],h=b.minPointOffset||0,d.startOnTick?b.min=e:b.min-h>e&&a.shift(),d.endOnTick?b.max=f:b.max+h<f&&a.pop(),a.length===1&&(b.min-=0.001,b.max+=0.001)},setMaxTicks:function(){var a=this.chart,b=a.maxTicks||{},c=this.tickPositions,d=this._maxTicksKey=
+[this.xOrY,this.pos,this.len].join("-");if(!this.isLinked&&!this.isDatetimeAxis&&c&&c.length>(b[d]||0)&&this.options.alignTicks!==!1)b[d]=c.length;a.maxTicks=b},adjustTickAmount:function(){var a=this._maxTicksKey,b=this.tickPositions,c=this.chart.maxTicks;if(c&&c[a]&&!this.isDatetimeAxis&&!this.categories&&!this.isLinked&&this.options.alignTicks!==!1){var d=this.tickAmount,e=b.length;this.tickAmount=a=c[a];if(e<a){for(;b.length<a;)b.push(ia(b[b.length-1]+this.tickInterval));this.transA*=(e-1)/(a-
+1);this.max=b[b.length-1]}if(u(d)&&a!==d)this.isDirty=!0}},setScale:function(){var a=this.stacks,b,c,d,e;this.oldMin=this.min;this.oldMax=this.max;this.oldAxisLength=this.len;this.setAxisSize();e=this.len!==this.oldAxisLength;n(this.series,function(a){if(a.isDirtyData||a.isDirty||a.xAxis.isDirty)d=!0});if(e||d||this.isLinked||this.forceRedraw||this.userMin!==this.oldUserMin||this.userMax!==this.oldUserMax){if(!this.isXAxis)for(b in a)for(c in a[b])a[b][c].total=null,a[b][c].cum=0;this.forceRedraw=
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+drawLegendSymbol:function(a){var b=this.options,c=b.marker,d=a.options,e;e=d.symbolWidth;var f=this.chart.renderer,g=this.legendGroup,a=a.baseline-t(f.fontMetrics(d.itemStyle.fontSize).b*0.3);if(b.lineWidth){d={"stroke-width":b.lineWidth};if(b.dashStyle)d.dashstyle=b.dashStyle;this.legendLine=f.path(["M",0,a,"L",e,a]).attr(d).add(g)}if(c&&c.enabled)b=c.radius,this.legendSymbol=e=f.symbol(this.symbol,e/2-b,a-b,2*b,2*b).add(g),e.isMarker=!0},addPoint:function(a,b,c,d){var e=this.options,f=this.data,
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+s._pos)E=s._attr.visibility,z=s.connX,A=s.connY,j=k?["M",z+(w[6]==="left"?5:-5),A,"C",z,A,2*w[2]-w[4],2*w[3]-w[5],w[2],w[3],"L",w[4],w[5]]:["M",z+(w[6]==="left"?5:-5),A,"L",w[2],w[3],"L",w[4],w[5]],i?(i.animate({d:j}),i.attr("visibility",E)):b.connector=i=a.chart.renderer.path(j).attr({"stroke-width":g,stroke:e.connectorColor||b.color||"#606060",visibility:E}).add(a.group);else if(i)b.connector=i.destroy()})}},verifyDataLabelOverflow:function(a){var b=this.center,c=this.options,d=c.center,e=c=c.minSize||
+80,f;d[0]!==null?e=r(b[2]-r(a[1],a[3]),c):(e=r(b[2]-a[1]-a[3],c),b[0]+=(a[3]-a[1])/2);d[1]!==null?e=r(J(e,b[2]-r(a[0],a[2])),c):(e=r(J(e,b[2]-a[0]-a[2]),c),b[1]+=(a[0]-a[2])/2);e<b[2]?(b[2]=e,this.translate(b),n(this.points,function(a){if(a.dataLabel)a.dataLabel._pos=null}),this.drawDataLabels()):f=!0;return f},placeDataLabels:function(){n(this.points,function(a){var a=a.dataLabel,b;if(a)(b=a._pos)?(a.attr(a._attr),a[a.moved?"animate":"attr"](b),a.moved=!0):a&&a.attr({y:-999})})},alignDataLabel:oa,
+drawTracker:F.prototype.drawTracker,drawLegendSymbol:G.prototype.drawLegendSymbol,getSymbol:oa};Y=ha(Q,Y);X.pie=Y;s(Highcharts,{Axis:eb,Chart:yb,Color:qa,Legend:fb,Pointer:xb,Point:Pa,Tick:Ma,Tooltip:wb,Renderer:Va,Series:Q,SVGElement:va,SVGRenderer:za,arrayMin:Ja,arrayMax:ua,charts:Ga,dateFormat:Ya,format:Ca,pathAnim:Ab,getOptions:function(){return L},hasBidiBug:Ub,isTouchDevice:Ob,numberFormat:Aa,seriesTypes:X,setOptions:function(a){L=x(L,a);Lb();return L},addEvent:K,removeEvent:$,createElement:U,
+discardElement:Ta,css:I,each:n,extend:s,map:Na,merge:x,pick:o,splat:ja,extendClass:ha,pInt:y,wrap:mb,svg:W,canvas:ca,vml:!W&&!ca,product:"Highcharts",version:"3.0.7"})})();
diff --git a/src/templates/home.html b/src/templates/home.html
index d736a7a2..421a8df2 100644
--- a/src/templates/home.html
+++ b/src/templates/home.html
@@ -2,7 +2,11 @@
 {% load i18n %}
 
 {% block head_js %}
-  {% include "pizza-chart.html" with chart_data=type_count chart_div="collabs" chart_height=330 %}
+  <script src="{{ STATIC_URL }}third-party/highcharts/js/highcharts.js"></script>
+
+  {% trans "Contributions" as collabs_name %}
+
+  {% include "pizza-chart.html" with chart_data=type_count chart_div="collabs" chart_height=330 name=collabs_name %}
 {% endblock %}
 
 {% block header %}
diff --git a/src/templates/pizza-chart.html b/src/templates/pizza-chart.html
index 17cb9277..f2e3e355 100644
--- a/src/templates/pizza-chart.html
+++ b/src/templates/pizza-chart.html
@@ -1,52 +1,37 @@
 {% load i18n %}
 
-    <!--Load the AJAX API-->
-    <script type="text/javascript" src="https://www.google.com/jsapi"></script>
-    <script type="text/javascript">
-    
-      // Load the Visualization API and the piechart package.
-      google.load('visualization', '1.0', {'packages':['corechart']});
-      
-      // Set a callback to run when the Google Visualization API is loaded.
-      google.setOnLoadCallback(drawChart);
-      
-      // Callback that creates and populates a data table, 
-      // instantiates the pie chart, passes in the data and
-      // draws it.
-      function drawChart() {
 
-      // Create the data table.
-      var data = new google.visualization.DataTable();
-      data.addColumn('string', 'Topping');
-      data.addColumn('number', 'Slices');
-      data.addRows([
-        {% for key, value in chart_data.items %}
-          ['{{ key }}', {{ value }} ],
-        {% empty %}
-          ['{% trans "Willing to help" %}', 100],
-        {% endfor %}
-      ]);
+<script>
+$(function () {
+  $('#{{ chart_div }}').highcharts({
+    chart: {
+      type: 'pie',
+      height: {{ chart_height }},
+    },
 
-      // Set chart options
-      var options = {
-        height: '{{ chart_height }}',
-        legend: {
-          position: 'bottom',
-          alignment: 'center',
-        },
-        chartArea: {
-          height: "85%",
-          width: "95%",
-          top: 10,
+    plotOptions: {
+      pie: {
+        allowPointSelect: true,
+        cursor: 'pointer',
+        dataLabels: {
+          enabled: false
         },
-      };
+          showInLegend: true
+      }
+    },
 
-      // Instantiate and draw our chart, passing in some options.
-      var chart = new google.visualization.PieChart(document.getElementById('{{ chart_div }}'));
-      chart.draw(data, options);
+    title: {
+      text: {% if chart_title %}'{{ chart_title }}'{% else %}''{% endif %}
+    },
 
-      $(window).on("debouncedresize", function( event ) {
-        chart.draw(data, options);
-      });
-    }
-    </script>
+    series: [{
+      data: [
+        {% for option, value in chart_data.items %}
+          ['{{ option }}', {{ value }}],
+        {% endfor %}
+      ],
+      name: '{{ name }}'
+    }]
+  });
+});
+</script>