[mapnik-german] Port over bridges_fill from osm-de.xml
[mapnik-german] Disable natural=wood
[mapnik-german] Add historic=castle
[mapnik-german] Change color from #da0092 to #e21b00 for amenity=hospital
[mapnik-german] Shops are only visible on zoom 18+
[mapnik-german] Change color from #000033 to #4c8056 for area-text
[mapnik-german] Copy styles from osm-de.xml for highway-junctions
[mapnik-german] Change tram/rail styles to match osm-de.xml