Show version in footer, and warn when DEBUG is set.
kegadmin: remove multiple choice widget.
Add system "epoch" version; disable site when epoch mismatch detected.

This should quickly catch those users who update the kegbot server software
without following the upgrade steps (missed migrations, etc).
Update upgrade instructions.
Move kegadmin templates into app dir.
api: accept only alphanumeric usernames.
Fix: supervisor tasks must not self-daemonize
Merge pull request #102 from kahlkevin/patch-1

Fix: supervisor tasks must not self-daemonize
core: add tick_time_series to Drink model, for recording flow update vector.
Remove deprecated verify_url parameter.
Remove calls to deprecated redirect_to shortcut.
registration: use django 1.5 compatible views.
Fix view name quoting in {% url %} template tags.

(Required for Django 1.5 compatibility.)
Use a class-based list view for KegList.

(Required for Django 1.5 compatibility.)
Delete obsolete claim_token endpoint.
Fix for "DoesNotExist" error in Django 1.5.

Apparently due to Django bug #13839, can no longer nullify a
OneToOneField via its referant.
Bump required django-socialregistration version to 0.5.10

(Required for Django 1.5 compatibility.)

Also bumps minimum Django version to 1.4.
docs: fix typo in upgrade docs.
Move kegweb templates into app.
Add "Sessions" tab, year/month/day drill-downs.