Managers should have limited access to reorganize tool

[jake]

Currently managers have no access to the reorganize tool. This makes it difficult to manage a section of a site when there are no easily accessible users with admin privileges. Managers should have a limited view of the reorganize tool, where they can manage the sections they have been granted privileges to.

I've attached an image of what i think the interface might look like when logged in as a manager.

[tboutell]

Not arguing the rationale but this will take some doing to code properly FYI. Might have to wait until a client project is pushing for it (open a corresponding TODO if they are). I wonder whether jsTree has facilities to disable interaction with some nodes. That would help a lot

[johnnyoffline]

Moved this to 1.6 so we can discuss it later. Might even be something to consider for 2.0