1.11 B and C are up

After the engine upgrade to the new SDL based renderer some people reported some issues, which have been adressed in the B and C Hotfixes. Changes 1.11 B: File cleanup: images & files not used anymore have been removed Game now can handle high DPI scaling, for those with high resolutions but small screen. Changes 1.11C: Fixed a SDL bug that would cause Game not to load on some systems.