Make it so that the app's explanation comes before the list of possible
policies. This gives the app a chance to explain itself instead of having
the explanation hidden below the fold. To avoid situations in which one
bunch of text items can obscure the other, use an expandable/ellipsizable
TextView with an indicator image. This resolves b/2992594.
Change-Id: I0eb0d0c46bb4be2ec2e019d741915537e1fcc592
Due to a missing "else" the logic to activate a device administrator
was immediately falling through into the logic to remove it. As a result,
the add was immediately countermanded by a remove.
Improve the look of the UI, and add the confirmation screen
for enabling an administrator. This uses the new framework APIs
to show its description and policies it will control.
