Update to Django 1.6.
Tell Travis where we moved the requirements file to.
Break everything, but make the model APIs nicer (and more normalised).

Notable exceptions to normalisation include some objects which store
both a time of creation and the show to which they apply. I'm way more
fine with this than with the current, worse evil of it being dog-slow to
work out what show a play or vote or whatever is for.

The primary source of additional normalisation is in giving Twitter
users their own database object. This, as a bonus, will also allow a
very easy fix for the broken user images that have become super obvious
in the last couple of months as people have been regularly changing
theirs.

I probably missed some things, too. We'll get there.
Merge branch 'django1.6' of github.com:colons/nkdsu into django1.6
Merge branch 'master' into django1.6
Begin importing old data, starting with shows and ScheduleOverrides.
Test and fix Show.at().
Don't expect anyone to ever Show.at([the future]).

There's a chance that this will be a problem with Twitter, but we'll
cross that bridge when we come to it.
Set SECRET_KEY.
Import tracks.
Import plays.
Import enough and implement enough to get a super rudimentary / working.
Minor docstring ammendments.
Rearrange path structure.
Use Pipeline for less > CSS compilation.
Include .gitignore.
Make tentative progress towards reimplementing the front page.
Use BigIntegerField for tweet IDs.
Fix the import script and make tracks look mostly like they used to.
Use nose for testing.