revise text layout

[pat-schmitt]

I can try to get rid of the large white space below the headings in the explanation texts.

[fmaussion]

That would be super nice! The app also doesn't work with latest package versions unfortunately - it would be great to get it back running, I'd like to make a few changes...

[pat-schmitt]

I partly managed to use a better text element for the description of glaciers (see https://discourse.holoviz.org/t/linking-holoviews-plot-selections-to-panel-markdown-using-js-callbacks/3980, instead of markdown I use now HTML), but there is still a problem with the formatting of the new text element (see holoviz/holoviews#5590).

Once this bug is fixed (or I find a solution for it) we can use HTML formatting to make the description text on the right look nicer.