Player and game ipsum; Configurable time

I wrote a script to generate random players; I left it in there.

Every user has the password "asdf". Look out for random meals shortly.

There is a fairly significant architectural change in here: the site now gets the current date and time via callables in `settings.py`. You'll have to add 

    NOW = None

to `local_settings.py` to make it work with the current time. Alternatively, you can use

    def NOW():
        return datetime.datetime(2013, 4, 2, hour, minute, second)

to return a particular time.

In particular, you probably want to specify a time during the ipsum game's timeframe (April 2nd to April 6th, the projected actual game's timeframe) when developing.

Issue #131.