Recent updates have broken the python manage script

[WadeBarnes]

We rely on the manage.py script to do things like delete topics from the OrgBook. We run these scripts remotely in the pods.

For example the deleteTopic.sh script calls delete_topic.py through manage.py. There was a reorg of the scripts in #792 and some recent to manage.py that seem to have broken the scripts.

$ ./manage -p bc -e prod deleteTopic BC0464835
Loading settings ...

If you continue the following topic will be permanently deleted from the OrgBook database; 'BC0464835'.
Would you like to continue?  Press Ctrl-C to exit, or any other key to continue ...

Enabling realtime indexing ...
INFO:snowplow_tracker.emitters:Emitter initialized with endpoint https://spt.apps.gov.bc.ca/i
Loading custom settings file: custom_settings_bcgov.py
Unknown command: 'delete_topic'
Type 'manage.py help' for usage.
command terminated with exit code 1
An error has occurred.  Please check the previous output message(s) for details.

[esune]

Resolved by #801