fixed Default Processor in TMXImporter
remove unused CCFileData class
added CCContentManager
make CCApplication.Content as Obsolete
use CCContentManager for loading content
helper methods PixelsToPoints, PointsToPixels
make CCXXXPixelsToPoints and CCXXXPointsToPixels
cleanup code
Revert "use CCContentManager for loading content"

This reverts commit f9b3f489a4b2479f011342fab810983f841171fd.
fixed compilation errors
use PixelsToPoints, PointsToPixels helper methods
make CCContent.LoadContentFile as Obsolete
use PixelsToPoints, PointsToPixels helper methods
added HD content
fixed CCContentScaleFactor: position Stat Labels
fixed ContentScaleFactor in CCRenderTexture
fixed ContentScaleFactor in CCAtlasNode
CCTexture2D.Name now returns XNATexture, for comparison internal content (fixed particle tests)
fixed ContentScaleFactor in CCGridBase, CCGrid3DAction
CCScrollView: added constructor CCScrollView(CCSize size), remove unused property PagesCount
remove compilation warnings