The current resource view ("treeview") is very plain, being based on CSS-centric foldable section thing that I use for documentation (sample; how it used to look). So, as such, it does not support drag and drop in any state or form, and neither it does support renaming (or otherwise inline-editing) items.
There have now been two different people that said that they'd take a shot at integrating a more fitting component (like this one) and neither seemed to find time or otherwise get it to work.
The other part of the job would be to create and link up resource files correctly, but that is minor if someone gets the aforementioned features to work and submits a pull request.