Controller Support first part: Build 0.61

We added a first version of controller support. We tested it with an XBox One controller, please give us feedback of your experience with other controllers: Just start the game and select your timezone (or New Game) and then you can switch to Controller Support in the options panel. What works: * Walking : Left stick * Action panel : X, A, B buttons * Open inventory: Y button * Switch players: Right bumper * Turn camera: Right stick The China timezone is also developing greatly: In this version we let you run around in China after the middle ages level a little bit, but there is still a lot of work to be done til we complete this world also. Stay tuned and have fun with Erwin's Timewarp.