Feature/names

Basic names and ability to change names is here. Click ESC to go to options and change name at the bottom. keyboard/mouse movement is disabled when that happens. names are visible to everyone and integrated with ending scoreboard.

needs to be prettified:
  - options menu now needs to look better (i made it look ugly)
  - name itself needs to look prettier 
  - any nickname canvas will block any other players nickname canvas if it's in the way of the view. Need to figure out how to make the canvases transparent with respect to each other. 
  - text looks kind of small IMO, but Yixin said leave it :-P