Allow us to update/edit "Manager" attribute inline

[#1]

As a system or group admin, I want the ability to edit a user's Manager attribute inline in a User report.

Currently, I can display the user's Manager in a report, but I can't update it. This makes for lots of tedious clicking when I have a long list of profile updates associated with regular re-orgs.

We have this capability already for Home Groups and Home Teams; but it's more useful for Manager.