- Removed south from installed apps.
- Moved migrations to south_migrations.
- Added new migrations directories.
- MIGRATION_MODULES setting.
- Added initial migrations
- Added TEST_RUNNER setting.
- Updated wsgi file.
- Changed mimetype arg in HttpResponse to content_type.

Added MPLCONFIGDIR location to django.wsgi. Otherwise, the gstlalcbc_reports page will break. This has something to do with matplotlib.

Having gracedb.gracedb was confusing and awful.

Adds new dependency on pylal for gwf reading and coinc table creation.
Relies on old dependency to glue for user code which does the above.