Dev migrate bafu tooltips

Fully migrated the BAFU model.

Some things to keep in mind:

- ch.bafu.bundesinventare-amphibien
- ch.bafu.hydrologie-wassertemperaturmessstationen
- ch.bafu.hydrologie-gewaesserzustandsmessstationen
- ch.bafu.bundesinventare-auen
are SEARCHABLE. Please check the existence of the index

- ch.bafu.gefahren-spektral has an issue by displaying the HTML element comicg directly from the table