[OTHER][REWORK] All marble stuff put under define MARBLE_ENABLED
[CORE][UI] Fixed a lot of stuff
[MARBLE] Patch to fix build issue in marble rev d5022cff6d8066dca7f9deb657a790dfce134d13
[UI][MARBLE] Marble maps now visible under MSWin
[UI][MARBLE] Deactivated left click on markers
[UI][MARBLE][GMAPS][FIX] From marble to gmaps ->  Map cannot be loaded, ...
[CORE][FIX] Added static destructors to singleton classes,
[UI] Added wait widget