Further reorganized client activities.

* Renamed package (again...) to reflect common cases vs edge cases.
Since all cases are relevant for service verificiation, I think this is
a better way to divide the Activities.

* Added property to NavigationItem for destination activity name since
there was a lot of copy pasta code for that.

Irrelevant changes: added internet permission to service for DAL verification and
removed taskAffinity (unnecessary) for all client Activities.

Bug: 66413150
Test: manual
Change-Id: I344d503b901a163b588a0eff994a59b4e1f20663