Added "related grammar" field to content model. Run `./manage.py migrate app` to update your database structure.
Added Django Suit admin theme, with some consequences:
- Overwrote collectstatic command so we do not "recollect" files that are already in the static directory.
- To apply the theme:
   - `source env/bin/activate`
   - `pip install -r requirements.txt`
   - Restart uwsgi
   - `./manage.py collectstatic`.
Merge pull request #29 from OpenPhilology/markdown

Installed admin theme and updated models.