apps.core.migrations.0004_convert_status_to_deliverystatus: Disabled.

Commented out all the code. It did nothing, so no need wasting the time.
apps.core.migrations: Disable 0014, and migrate all groups instead.
apps.core.migrations: Migration to set deliverystatus on all groups.
Merge branch 'master' of github.com:devilry/devilry-django