correct formatting for game time slider
Add a display of the current game time. This needs refactoring as too
many bits tell other bits about the game starting and stopping.
decouple the ui components by having the gamestate object tell them when
the game starts/stops. This puts a dependency on Qt into core but the
signal/slots mechanism is too tempting to avoid!
remove unused imports
update testData
use signals/slots for player dead as we now have a qt dependency
use signals and slots for yet more stuff
update TODO
fix some playerUpdated calls to be signal emit calls
reset works fine for now but disconnect and reconnection don't really.