Add/Modify Permissions and Sets from Create/Edit User Pages

Closing as a duplicate of

OK.

The "thrashing out" has already occurred for this in Slack on the UX channel and this story is the result.

All the individual parts of that story make sense ...

And yet ...

I think it's better that UI design be thrashed out by Filip, you, the SIGs and whatever developers want to be involved (Jason included) rather than that we speculatively implement individual "nice ideas" that people have had, only to find later that we have to undo them.

I'm not sure I agree with that in all cases, but I will concede that for the user record we've got an odd mix of stuff that can be edited from the preview pane and other stuff that can be edited from the edit form. We should probably do one or the other. Filip's initial intention, I think, was that all editing happen inline in the preview pane, but and I thought it made more sense to start by leveraging the create form for edit and add inline editing later. Anyway, this question about adding permissions when creating a new user was raised recently by on the UX channel in Slack. suggested we just add this capability to the create form and I added a story to the backlog. I actually don't think it's a high priority considering most users will be created via import.