keyboardcomposer destroy fix and cleanups - We were destroying KeyboardComposer a little too much. Fortunately, we weren't passing the right number of arguments, so this was merely an error. - About the TODO comment removed: we don't need to use combine_dict since Submaster logic will be changed entirely when we/if we move to a SubServer world and keyboard composer will not be the wiser.

'''Baby, there won't be no next time'''

class NextTime:
    def __init__(self, nextclock, interval=None)
        self.nextclock = nextclock
        self.interval = interval
    def cylic(self):
        return interval is not None