Fix frozen crosshair when holding a mouse button. CTs see planted bomb location.

- There was a super annoying glitch on Linux distros with X11 window systems - when switching between windows and back to Hypersomnia, the crosshair stops moving whenever you hold a mouse button, making shooting very uncomfortable.

- Metropolis players can now see a bomb indicator once the bomb is planted. This is to make the game easier on newbies because some maps have several bombsites.