Rework left side panel - region, muns and parameter selection (step 2)

[nesnoj]

Region dropdown

• start: no selection
• classic dropdown (1 region only)
• on select
  • load muns of the region into muns dropdown and activate
  • zoom to bbox of region @henhuy
  • activate parameter dropdown
  • show choropleth @henhuy
• on unselect (reset button beside dropdown?)
  • (show popup to confirm?)
  • zoom out to Germany @henhuy
  • deactivate dropdowns: parameter ("Darstellung") and parameter reference ("im Verhältnis zu")
  • remove muns from muns dropdown (and top nav) and deactivate

Muns dropdown

• multi select dropdown
• on select or remove: toogle in top nav list (-> use JS fct toggle region from @henhuy )
• on change @henhuy
  • outline selected muns

---

Regions: municipalities

• Oderland-Spree: Erkner, Grünheide (Mark), Strausberg, Rüdersdorf bei Berlin
• Ingolstadt: Ingolstadt
• Nordhessen: Kassel
• Münsterland: Bocholt
• Kiel: Kiel
• Südwestsachsen: Zwickau