feed/admin.py: more info in feed admin
fabfile.py: add restart command
feed/admin.py: add subscription info to admin
feed/models.py: ensure Feed.url is unique
add feeds from the web
feed/admin.py: add subscription states
feed/admin.py: search on name, html_url, and url
feed/admin.py: add some subscription/update actions
feed/models.py: use async for verification
simplify how sub/unsub requests are handled
update tests to reflect new verification scheme
add_feed: subscribe when adding
Feed.update: use UTC now for published timestamp

It just feels 'off' when new updates aren't up top.
Feed.update: add initial option

Used when adding a feed for the first time (in
feed.views.add_feed). Only add feeds from within the past 24 hours are
added.
feed/models.py: unsubscribe before deleting models
Feed.update: fix handling old entries when doing first update
Feed.update: reverse entries when doing initial update
Feed.update: always reverse entries
view_river.html: remove add feed form
base.html: link to / from header