diff --git a/Gemfile.lock b/Gemfile.lock
index c9204c09e25..e720b27bc8c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -4,18 +4,9 @@ GIT
   ref: 3861c9d
   branch: sass-deprecation-warning-fix
   specs:
-    compass (1.0.3)
-      chunky_png (~> 1.2)
-      compass-core (~> 1.0.2)
-      compass-import-once (~> 1.0.5)
-      rb-fsevent (>= 0.9.3)
-      rb-inotify (>= 0.9)
-      sass (>= 3.3.13, < 3.5)
     compass-core (1.0.2)
       multi_json (~> 1.0)
       sass (>= 3.3.0, < 3.5)
-    compass-import-once (1.0.5)
-      sass (>= 3.2, < 3.5)
 
 GIT
   remote: https://github.com/travis-ci/dpl
@@ -27,21 +18,15 @@ GIT
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (4.2.11.1)
-      i18n (~> 0.7)
+    activesupport (5.2.4.3)
+      concurrent-ruby (~> 1.0, >= 1.0.2)
+      i18n (>= 0.7, < 2)
       minitest (~> 5.1)
-      thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
     addressable (2.7.0)
       public_suffix (>= 2.0.2, < 5.0)
     ast (2.4.0)
-    capybara (2.4.4)
-      mime-types (>= 1.16)
-      nokogiri (>= 1.3.3)
-      rack (>= 1.0.0)
-      rack-test (>= 0.5.4)
-      xpath (~> 2.0)
-    chunky_png (1.3.10)
+    backports (3.17.1)
     cl (1.2.1)
       regstry (~> 1.0.3)
     coderay (1.1.2)
@@ -50,6 +35,9 @@ GEM
       execjs
     coffee-script-source (1.12.2)
     colorator (1.1.0)
+    concurrent-ruby (1.1.6)
+    contracts (0.16.0)
+    dotenv (2.7.5)
     em-websocket (0.5.1)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
@@ -60,14 +48,15 @@ GEM
     execjs (2.7.0)
     faraday (0.15.2)
       multipart-post (>= 1.2, < 3)
-    ffi (1.11.1)
+    fastimage (2.1.7)
+    ffi (1.12.2)
     forwardable-extended (2.6.0)
-    haml (5.0.4)
+    haml (5.1.2)
       temple (>= 0.8.0)
       tilt
-    hike (1.2.3)
-    hooks (0.4.1)
-      uber (~> 0.0.14)
+    hamster (3.0.0)
+      concurrent-ruby (~> 1.0)
+    hashie (3.6.0)
     html-proofer (3.12.0)
       addressable (~> 2.3)
       mercenary (~> 0.3)
@@ -78,9 +67,10 @@ GEM
       typhoeus (~> 1.3)
       yell (~> 2.0)
     http_parser.rb (0.6.0)
-    i18n (0.7.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     jaro_winkler (1.5.1)
-    jekyll (3.8.4)
+    jekyll (3.8.7)
       addressable (~> 2.4)
       colorator (~> 1.0)
       em-websocket (~> 0.5)
@@ -94,86 +84,88 @@ GEM
       rouge (>= 1.7, < 4)
       safe_yaml (~> 1.0)
     jekyll-paginate (1.1.0)
-    jekyll-redirect-from (0.14.0)
-      jekyll (~> 3.3)
+    jekyll-redirect-from (0.16.0)
+      jekyll (>= 3.3, < 5.0)
     jekyll-sass-converter (1.5.2)
       sass (~> 3.4)
-    jekyll-watch (2.0.0)
+    jekyll-watch (2.2.1)
       listen (~> 3.0)
-    json (2.1.0)
     kramdown (1.17.0)
+    lazy_priority_queue (0.1.1)
     libv8 (3.16.14.19)
-    liquid (4.0.0)
-    listen (3.0.8)
-      rb-fsevent (~> 0.9, >= 0.9.4)
-      rb-inotify (~> 0.9, >= 0.9.7)
+    liquid (4.0.3)
+    listen (3.2.1)
+      rb-fsevent (~> 0.10, >= 0.10.3)
+      rb-inotify (~> 0.9, >= 0.9.10)
+    memoist (0.16.2)
     mercenary (0.3.6)
     method_source (0.9.0)
-    middleman (3.4.1)
+    middleman (5.0.0.rc.1)
       coffee-script (~> 2.2)
-      compass (>= 1.0.0, < 2.0.0)
-      compass-import-once (= 1.0.5)
-      execjs (~> 2.0)
       haml (>= 4.0.5)
       kramdown (~> 1.2)
-      middleman-core (= 3.4.1)
-      middleman-sprockets (>= 3.1.2)
-      sass (>= 3.4.0, < 4.0)
-      uglifier (~> 2.5)
-    middleman-core (3.4.1)
-      activesupport (~> 4.1)
-      bundler (~> 1.1)
-      capybara (~> 2.4.4)
+      middleman-cli (= 5.0.0.rc.1)
+      middleman-core (= 5.0.0.rc.1)
+    middleman-cli (5.0.0.rc.1)
+      thor (>= 0.17.0, < 2.0)
+    middleman-core (5.0.0.rc.1)
+      activesupport (~> 5.2)
+      addressable (~> 2.3)
+      backports (~> 3.11)
+      bundler
+      contracts (~> 0.16.0)
+      dotenv
       erubis
-      hooks (~> 0.3)
-      i18n (~> 0.7.0)
-      listen (~> 3.0.3)
-      padrino-helpers (~> 0.12.3)
-      rack (>= 1.4.5, < 2.0)
-      thor (>= 0.15.2, < 2.0)
-      tilt (~> 1.4.1, < 2.0)
+      execjs (~> 2.0)
+      fastimage (~> 2.0)
+      hamster (~> 3.0)
+      hashie (~> 3.4)
+      i18n (~> 0.9.0)
+      listen (~> 3.0)
+      memoist (~> 0.14)
+      oj (~> 3.7)
+      padrino-helpers (~> 0.14.4)
+      parallel
+      rack (>= 1.4.5, < 3)
+      rgl (~> 0.5.3)
+      sassc (~> 2.0)
+      servolux
+      tilt (~> 2.0.9)
+      uglifier (~> 4.1)
     middleman-gh-pages (0.3.1)
       rake (> 0.9.3)
-    middleman-livereload (3.3.4)
+    middleman-livereload (3.4.6)
       em-websocket (~> 0.5.1)
-      middleman-core (~> 3.2)
-      rack-livereload (~> 0.3.15)
-    middleman-sprockets (3.5.0)
       middleman-core (>= 3.3)
-      sprockets (~> 2.12.1)
-      sprockets-helpers (~> 1.1.0)
-      sprockets-sass (~> 1.3.0)
-    middleman-syntax (3.0.0)
+      rack-livereload (~> 0.3.15)
+    middleman-syntax (3.2.0)
       middleman-core (>= 3.2)
-      rouge (~> 2.0)
-    mime-types (3.1)
-      mime-types-data (~> 3.2015)
-    mime-types-data (3.2016.0521)
+      rouge (~> 3.2)
     mini_portile2 (2.4.0)
-    minitest (5.11.3)
-    multi_json (1.13.1)
+    minitest (5.14.1)
+    multi_json (1.14.1)
     multipart-post (2.0.0)
     netrc (0.11.0)
-    nokogiri (1.10.8)
+    nokogiri (1.10.9)
       mini_portile2 (~> 2.4.0)
-    padrino-helpers (0.12.9)
+    oj (3.10.6)
+    padrino-helpers (0.14.4)
       i18n (~> 0.6, >= 0.6.7)
-      padrino-support (= 0.12.9)
+      padrino-support (= 0.14.4)
       tilt (>= 1.4.1, < 3)
-    padrino-support (0.12.9)
-      activesupport (>= 3.1)
+    padrino-support (0.14.4)
     parallel (1.17.0)
     parser (2.5.1.0)
       ast (~> 2.4.0)
-    pathutil (0.16.1)
+    pathutil (0.16.2)
       forwardable-extended (~> 2.6)
     powerpack (0.1.2)
     pry (0.11.3)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
-    public_suffix (4.0.1)
+    public_suffix (4.0.5)
     puma (3.12.4)
-    rack (1.6.12)
+    rack (1.6.13)
     rack-jekyll (0.5.0)
       jekyll (>= 1.3)
       listen (>= 1.3)
@@ -181,18 +173,19 @@ GEM
     rack-livereload (0.3.17)
       rack
     rack-ssl-enforcer (0.2.9)
-    rack-test (1.0.0)
-      rack (>= 1.0, < 3)
     rainbow (3.0.0)
     rake (12.3.3)
-    rb-fsevent (0.10.3)
-    rb-inotify (0.9.10)
-      ffi (>= 0.5.0, < 2)
+    rb-fsevent (0.10.4)
+    rb-inotify (0.10.1)
+      ffi (~> 1.0)
     rdiscount (2.2.0.1)
     redcarpet (3.4.0)
     ref (2.0.0)
     regstry (1.0.15)
-    rouge (2.2.1)
+    rgl (0.5.6)
+      lazy_priority_queue (~> 0.1.0)
+      stream (~> 0.5.2)
+    rouge (3.19.0)
     rubocop (0.57.2)
       jaro_winkler (~> 1.5.1)
       parallel (~> 1.10)
@@ -203,37 +196,27 @@ GEM
       unicode-display_width (~> 1.0, >= 1.0.1)
     ruby-progressbar (1.9.0)
     ruby18_source_location (0.2)
-    safe_yaml (1.0.4)
+    safe_yaml (1.0.5)
     sass (3.4.25)
-    sprockets (2.12.5)
-      hike (~> 1.2)
-      multi_json (~> 1.0)
-      rack (~> 1.0)
-      tilt (~> 1.1, != 1.3.0)
-    sprockets-helpers (1.1.0)
-      sprockets (~> 2.0)
-    sprockets-sass (1.3.1)
-      sprockets (~> 2.0)
-      tilt (~> 1.1)
-    temple (0.8.0)
+    sassc (2.3.0)
+      ffi (~> 1.9)
+    servolux (0.13.0)
+    stream (0.5.2)
+    temple (0.8.2)
     therubyracer (0.12.3)
       libv8 (~> 3.16.14.15)
       ref
-    thor (0.20.0)
+    thor (1.0.1)
     thread_safe (0.3.6)
-    tilt (1.4.1)
+    tilt (2.0.10)
     timerizer (0.3.2)
     typhoeus (1.3.1)
       ethon (>= 0.9.0)
-    tzinfo (1.2.5)
+    tzinfo (1.2.7)
       thread_safe (~> 0.1)
-    uber (0.0.15)
-    uglifier (2.7.2)
-      execjs (>= 0.3.0)
-      json (>= 1.8.0)
+    uglifier (4.2.0)
+      execjs (>= 0.3.0, < 3)
     unicode-display_width (1.4.0)
-    xpath (2.1.0)
-      nokogiri (~> 1.3)
     yell (2.2.0)
 
 PLATFORMS