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The unit-info-window can be toggled now

Added an indicator which color is active now (flashing map)

This was a bad merge, but I'd messed up the repo...

removing the active player should work correctly now.

Removed end_turn after removing a player... this could cause bugs

Added a method to remove a player

Fixed errors in map.cpp

Fixed a potential bug which has to do with map-dimensions

Fixed a bug with capturing buildings

Added a method to make buildings white

Fixed building of server (i386 only, for now)

Used signals2 in server

Added some convenience-methods