Fix illustration and the textview alginment.
The imageview doesn't change the direction of the drawable,
so we change scale type based on layout direction.
Bug: 187526643
Test: manually test with with locale ur and en
Change-Id: Ie4544f0eb00309a6132e4b6d794ad2a76966133c
To support new settings UI, we change the UI from scrollview
to listview to simplify UI initialization.
Bug: 182118397
Test: atest MagnificationSettingsFragmentTest
and manual test.
Change-Id: Ib65dc139ba54f2281e5cb7e2dc55b3574ad2c733