Merge branch 'V1.1' into libgdx-port
First attempt to port the Main Menu to libGDX
improved port of the main menu

- everything get's rendered
- sound works
Moved WorkingDirectory.class into EngineCore
Improved port oft main menu
Improved menu port
updated logo and lettering
Started porting Core to libGDX
Added credit for JN Roesch
The map gets rendered and the msg system
Improved rendering & custom game
Tried to add rendering of the minimap
Set delta to int again
Ouput of entity name which is followed
small refactoring
small refactoring
Improvements on camera
Imporved camera
Fixed rendering
re-enabled light engine