Fix bugs (line width, background color)

Fixes
- line width bug, see
  http://www.openstreetmap.org/user/Nakaner/diary/18642#comments
  thanks to OSM user radosm
- background color bug, see
  http://www.openstreetmap.org/user/Nakaner/diary/18642#comments
  thanks to OSM user radosm
- "Whs" in residential buildings is not needed, see
  http://www.openstreetmap.org/user/Nakaner/diary/18642#comments
  thanks to OSM user surveyor2000
Merge branch 'master' of github.com:Nakaner/cadastrestyle
update readme file

removed line width bug from "known problems"