Simulation input and Update() does not happen when prediction is disabled. Both of these can be re-opted in on a per-handler/system basis with a bool flag. Stuff like physics opts out of this now.
* 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.
