Initial revisions for new models

[dchiller]

I think with new models added to the production site, we need to add initial reversions for those models.

See here https://django-reversion.readthedocs.io/en/latest/

@lucasmarchd01 I'm wondering if you could take a look at the documentation there (or draw from what you know of django-reversion) to see what you think about this and check my understanding.

[lucasmarchd01]

Sure, I'll take a look!