* 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.
Added IClientConGroupController and implemented it as ClientConGroupController. Lets client-side code check what commands the client can use based on their console group. Serves the same purpose as the server-side IConGroupController except it doesn't load a list of permissions from groups.yml. Instead, the server ConGroupController sends updated permissions to clients whenever they change.
