[Toolkit.Input] Input support for WP8 platform
[Toolkit.Input] Added XML comments and simplified code
[Toolkit.WP8] Added support for DrawingSurface
[Toolkit.WP8] Improved code
[Toolkit.Graphics] Add support for DepthStencilBuffer as ShaderInput
[SharpDX] Don't call RenderForm.OnUserResized event when cachedSize is empty
[Toolkit.Game] Fix issue #395. Avoid LoadContent to be called twice while initializing
Merge branch 'master_integration'