Renamed features appear as "New" in the options #4801

I just noticed that renamed features are being shown as NEW because the renames are just stored as migrations. We should move these renames to an object somewhere and then use the object in the migrations, in the options, rgh-feature-descriptions, etc — permanently.

<img width="774" alt="Screen Shot 2" src="https://user-images.githubusercontent.com/1402241/134031117-3a372b8d-8181-4ced-bd91-00dc51913428.png">