0.9.4 precise waypoints

Waypoints now remeber their original destination, even after dropping out of warp. -> always point to precise target.

WarpSpace now displays message "dropout point reached" when dropout zone was reached.

Waypoint is not deleted when reached in warp.

WarpSpace now replaces ClientGameData class -> looses compatibilty with that

Backend refactoring of how waypoints are shown to the player.