Allow user to rename things that the API allows renaming
Problem/Opportunity Statement
In !892 (merged) it came up that we don't let the user rename an existing volume.
What would success / a fix look like?
We should support this. Handle communication around changing mount points as detailed here.
This is related to #954. In fact, we should probably address this holistically around the app. Support renaming of:
- Volumes
- Images
- Shares
- SSH pub keys? eh
Maybe we re-use some UI widgetry from the instance rename UX.