🚀 Feature Request: Fix/Complete Theme Support

[costdev]

Describe the problem that needs this feature

We've mostly been testing with plugins up until now. As a result, some of our features either don't support themes at all, or don't handle the differences between plugins and themes.

I used a test theme, did:plc:fbiuevja7wpvkgkh4zcswe4r, to step through admin-based theme handling.

[afragen]

Should we create a 1.3 milestone and punt there?