* Removed the Interfaces folder.
* All objects inside the GameObjects subfolders are now in the GameObjects namespace.
* Added a Resharper DotSettings file to mark the GameObjects subfolders as not providing namespaces.
* Simplified Robust.client.Graphics namespace.
* Automated remove redundant using statements.
Correctly use KHR and OES suffixed functions for debug output and VAOs, if necessary.
Allow overriding the detected GL version for feature detection (nvidia gives me an ES 3.2 context even when ES 2.0 is requested, so...)
1. Fixes screenshots on ES by providing a fallback path for when encessary features (PBO, fence sync, mapbuffer) are not available.
2. Correctly detect fence sync as not always being available for 3.1
3. Remove the "bad OpenGL version" box. We have MessageBoxW now.
4. Separated feature detection for ES and Desktop, added more feature detections on various sides.
5. Moved GL feature detection to its own file.
