Scrolling scrolls the entire screen, including the header.

This modifies the scrolling behavior on most Permissions Controller
pages so that it scrolls the entire screen, including the header.

Also fix the "no permission usages" text overlapping with the header
in landscape mode.

Fixes: 123289863
Test: Scroll pages.
Change-Id: I65923655c4c6a5a5fc1b212e55972429af39be46