bringing metastation up to date/bridge update/fixes

well
-fixes a floating sign and a window sign
-fixes solar areas that were misplaced
-adds contraband posters to maint, and legit posters to sec/meetingroom/library
-adds the protective wall from boxstation to the singulo
-recolors the bridge completely with new dark tiles
![bridge](https://cloud.githubusercontent.com/assets/7576719/4623451/313d7052-534f-11e4-88b6-636092b70411.png)
-fixes pathing errors of course
-fixes a compilation error
-that's it