Add missions.

There are Missions and then there are Plots. Each Mission should have
one Plot for each team.

Test coverage is still pretty bad, and I have done absolutely no
styling.
Merge pull request #128 from jthemphill/develop

Upgrade Django to 1.4.5
Replace outcome node with in-template logic.

Something something lesser of two evils.
Authentication

So humans and zombies can't see each others' mission stories.
Add a visibility flag.

Also, actually enforce mission visibility this time.
Merge pull request #129 from jthemphill/feature/missions

Add missions
Add customizable ordering to rules.

Uses jQuery-UI for drag-and-drop ordering.

Note that new rules will be dropped in at the beginning by default.
Upgrade to Django 1.5

Everything looks stable, and all the tests pass.

I removed all the url-loading tags, since we are now officially living
in the future.
Better Mission/Plot Admin Page

Now you can filter missions by game, define plots inline with missions,
and set a mission's victor or visibility from the mission list.
Migrate from the deprecated localflavor package.
Merge pull request #139 from jthemphill/django_1.5

Upgrade to Django 1.5
Merge pull request #140 from jthemphill/feature/better_missions_admin

Better Mission/Plot Admin Page
Merge pull request #138 from jthemphill/feature/ordered_rules

Add customizable ordering to rules.
Merge branch 'develop' into feature/ipsum

Conflicts:
	HVZ/HVZ/main/validators.py
	HVZ/HVZ/rules/models.py