Fix !time not being usable in the join phase.

Previously, !time could be used in the join phase to see how much time
was left before the game started. With my decorators overhaul I broke
this feature. Adding this back in.

modules/wolfgame.py

@@ -6194,7 +6194,7 @@ def pony(cli, nick, chan, rest):
     cmsg = "The pony lands on \2{0}\2.".format(pony)
     cli.msg(chan, cmsg)
 
-@cmd("time", pm=True, game=True)
+@cmd("time", pm=True, game=True, join=True)
 def timeleft(cli, nick, chan, rest):
     """Returns the time left until the next day/night transition."""