[Update] Domain status enum

[hzoppetti]

updated domain status enum to only include active and disabled

[nmelehan]

@cschreep Hola! This should be ready for your review, though I do have one question for you--

Technically, it looks like the API code updates only get rid of setting the edit_mode status on the API and doesn't have any bearing on whether a domain with status of edit_mode could be read from the API, if that were to exist. Would you prefer it if we set edit_mode to read-only instead of getting rid of it? Or, because we're looking to phase it out in general, should we just stick to getting rid of it entirely?

[cschreep]

@nmelehan the request for this change suggests that we don't want it at all anymore, so we should stick with getting rid of it entirely