Add UI that lists enterprise set default apps for handling important intents
(opening browser, using camera, phone, etc).
Bug: 32692748
Test: m RunSettingsRoboTests
Merged-In: I75bb97d1b3728b1dcb90981b24d12edf510c4b04
Change-Id: I7d0041e4fada48bc56f6a6637614ac4471dba65a
(cherry picked from commit f0a61dd112)
This CL continues the finalization of UI layout and strings for the
enterprise privacy page:
* Turn footer into a header
* Update strings
* Dynamically generate summaries for entry points in security page
Bug: 32692748
Test: m RunSettingsRoboTests
Change-Id: Ibf248ac269380fb1b919b01f88f721130060b7f9