Update README with shutdown steps for use later

Remove script used to delete remaining private data

Transition application into maintenance mode

Update the Google Maps API key, because the old one disappeared and broke

Update app to Python 2.7 from the deprecated 2.5

Convert database keys to old non-HRD application

Update app name, version, API keys with -hrd suffix

Reset Bitly API key

Bump app version, don't update Google Maps to APIv3

Fix offset map on logged-out home page

Minor tweak to support more recent 4sq API version

Specify version date for Foursquare API

Fixed broken default map, and a bug where map tiles near the International Date Line were getting requested with a Longitude of -182.109375 by Google, which was causing my geomodel provider to fail.

Forgot an index for the cron job venue cleanup

Group the overlay clearing with the creation, so you don't get cases where there are two identical overlays making everything really dsaturated.