Add resource-manager sample
Delete TextureManager.h
Delete MeshManager
Delete FontManager
Update CMakeLists.txt
Update Crown.h
Update tools/CMakeLists.txt
Major changes in Filesystem
Major changes in Font and Material too
Initial implementation of the new ResourceManager
Disable Skybox
Disable BMP saving of Terrain
Rename Mesh to MeshResource
Disable texturing in GLRenderer
Disable TextRenderer
Use char* instead of Str& in CoreEventArgs
Declare StringId32/64
Disable GLTexture
Disable GLTextureManager
Fix includes