Added camera that follows the movement of units

Added posibility to change username

Added mouse movement indicator, so every player sees the other players mouse movement

Added indicator what other players are doing

Added performed action history to demon rank track

Added turn tracker to game and savegames

Changed demon background color to player color

Changed popup behaviour

Changed summoning behaviour

Changed loading of savegames ui

Fixed gamebreaking situation where moving units breaks game

Fixed loading savegame

Fixed crash regarding AI

Fixed combat: only participants can flee combat

Fixed demon Andras/Pruflas stats

Fixed loading setup in game-room