Code update and the technical parameters of the engine

Code update and the technical parameters of the engine. 1. Fixed the problem: some gui content disappearing when walking. 2. The game now takes about 30% less memory. 3. Approximately 2 times accelerated the generation of a new game. 4. The game AI accelerated by 15% and 20% increase in FPS when rendering graphics. 5. 2 times reduced the size of game saves on disk. Important. Old game saves (earlier than 15.october.2015) may stop work correctly, so I highly recommend to start a new game.