UI design and mouse

Hello defenders, I know the current state of the UI is not the best, especially for a player who never played the game. I will push a new build to the debug branch tomorrow with some UI changes in the main menu. I also put the in game UI completely to the right hand, that means the building menu and the players stats are on the same hand. With that change, the player will now have all information on one place. Also, a laser pointer is now available to the player, that should also improve the readability of where the mouse is pointing at.