drop DB rules
Preclude adding stub participants as team members. Resolves #2364
Added Community.from_slug method
Added REST API to get community with all its members.
Moved converting participant to JSON to utils.json
Test refactored
Note gittip-twisted on README
Add a make target for a configured python shell
Send additional address info to Balanced; #2446
Merge pull request #2447 from gittip/make-py

Add a make target for a configured python shell
Use correct attribute name
Merge pull request #2448 from gittip/cc-country

Send additional address info to Balanced; #2446
Bump version to 13.1.2
Bump version to 13.1.2-dev
add Bountysource badge
directly link to building.gittip from the README
Move untip.py to a method on Participant

This is a step on the way to making account cancelation self-serve. This
commit keeps the untip.py script used in the current cancelation process
but delegates to a (tested) method on Participant.
Add link to credit card update page on expiry notifications.
Merge pull request #2471 from gittip/2471-cc-notification-link

Credit card expiration banner needs a link to setting
Merge pull request #2464 from gittip/clear_tips_receiving

Move untip.py to a method on Participant
This factors out an archive method from take_over

Right now we archive participants during take_over, but we also want to
archive participants during account cancelation.