Steglitz-Zehlendorf Kategorien. Not yet complete.

Steglitz-Zehlendorf again questions our current plan with the Thema-Angebots-Hierarchy.

Steglitz-Zehlendorf makes no use of Angebote. Instead it defines new "Kategorien" which are "Angebote" in most of the other Bezirke.

Furthermore Steglitz-Zehlendorf defines 2 proprietary criterias ("Bezirksamt", "Sonstige Behörden") which was a rather bad decision as the detail info for each geo object now shows "Bezirksamt" and "Sonstige Behörden" sections which is rather useless/disturbing for most of the geo objects.

The ETL does *not* define the "Bezirksamt" and "Sonstige Behörden" criterias. Instead it will maps the corresponding categories to existing "Angebote" categories.