Merge branch 'master' into staging
FIXES #168
FIXES #173
FIXES #174
Schemamigrations for MediaFile status
FIXES #161

- Projects are ordered by name
- Contributions are ordered by date updated and then by id
- Comments are ordered by id, which reflects the order they were created
- MediaFiles are ordered by id, which reflects the order they were
created
FIXES #172

Extremely strange behaviour. I wasn’t able to track down the reason.
Added a check if filters are not null, which fixes it
Updated requirements to more secure version of restframwork
New Backend feature: Connected Apps

Users can access a list of all apps the have granted access to and
revoke the connection to these apps
Fixes #176
Added DEBUG mode warning message in admin
Added new line to core/settings/dev.py
Renaming Views to DataGroupings
Rename observationtypes to categories
Clean up migrations
Clean up migrations
Template bug fixes
Merge branch 'rename' into staging
Merge branch 'staging'