lowercase some HTML tag names…

how did I miss these last time?
ensure that membership lists on profile page wrap properly

that is, clear the CSS float after every third element to ensure the
next set of three is always on its own line
fixing #831 disable autocomplete on searching username
Began adding account linking with Venmo
Add venmo api keys for dev, began associate
typo
WIP connecting venmo
Save venmo information to db, including oauth
Refactor confirm
create platform -> class registry for AccountElsewhere
leave registry interface as dictionary
wip refactor
remove username helpers comment
Merge branch 'D-refactor-platforms' into link-venmo
Merge branch 'refactor-platforms' into link-venmo

Conflicts:
	gittip/elsewhere/__init__.py
Merge branch 'master' into link-venmo

Conflicts:
	gittip/elsewhere/__init__.py
	gittip/models/participant.py
	www/%username/username.json.spt
Update/organize default env files
use requests.json rather than json.loads
DRYer AccountElsewhere
WIP link