Better table visibility

In the api documention, the scoll bars in tables make them inconvenient to read, even more on a mobile-friendly webpage. This PR replaces these scroll bars by text wrapping.

[before](http://api3.geo.admin.ch/services/sdiservices.html#id10)
[now](http://mf-chsdi3.dev.bgdi.ch/kan_api_doc_better_tables/services/sdiservices.html#id10)