2015-3.2: Merge pull request #1184 from johngian/playdoh-upgrade

Upgrade Django to version 1.6.11

2015-3.1: Merge pull request #1180 from johngian/fix-users-api

Add vouched status in detailed userprofile API serializer.

2015-2.3: Merge pull request #1157 from akatsoulas/django-rest-requirements

Add django-rest-framework to requirements.

2015-2.2: Merge pull request #1164 from johngian/api-waffle-flags

Use different waffle flags for API endpoint and UI.

2015-2.1: Merge pull request #1155 from johngian/pr1138

[Fix bug 1115378] Add Mozilla Pontoon profile to external accounts.

2015-1.4: Merge pull request #1151 from johngian/1122518

Use QuerySet.datetimes() instead of QuerySet.dates().

2015-1.3: Merge pull request #1150 from johngian/1122158

Disable html5 validation in /invite form.

2015-1.2: Merge pull request #1147 from johngian/fix-1120661

[Fix bug 1120661] Respect group membership status in API results.

2015-1.1: Merge pull request #1139 from johngian/1115684-vouch-flags

[Fix bug 1115684] Update "is_vouched" flag from /admin.

2014-11.1: Merge pull request #1125 from johngian/bug-989292

[bug 989292] Fix formatting in remove from group email.