Cleaned some component code.
Added CameraPositionConverter component to get world to screen and screen to world coordinate.
Removed a derp in the swig makefile.
addChild will set the movie clip on the first frame if the movieclip does not contain frame yet.
Integreted the visibility component in the MovieClipEntity.
Added EntityFactory::getMovieClipEntity() with no parameter to get empty movieclip.
Merge branch 'develop' into feature/webdav