Renaming databases
There is a logical messed up situation for the building-initializer and the naming of databases because of the added GHSL database. The building_source_db is the database where the buildings are coming from (source for google/microsoft, osm_replication for osm). The source_db is the osm_replication database (as there is where the non-building related information comes from). For the OSM process, the building_source_db and the source_db are the same, so the first one is not specified. For GHSL, the database used for google/microsoft would depend on whether it is microsoft/google or openstreetmap. Before we can add GHSL batch processing, we need to fix this.