SystemUI: Use material delete icon

Change-Id: I11df5713486672e4f5c4784e6f94a893cf36b4dd
Signed-off-by: Chet Kener <Cl3Kener@gmail.com>
String edits

Signed-off-by: Chet Kener <Cl3Kener@gmail.com>
Revert "status bar: native battery percentage"

This reverts commit aaca569b8f7c018e4a3509ebbcf9fd02676ba9c6.

Signed-off-by: Chet Kener <Cl3Kener@gmail.com>
status bar: battery level text

1. Add TextView to display battery level percentage next to the battery icon.
2. Remove support for displaying battery percentage on the actual battery icon itself.
3. Also respect view on lockscreen and opened notification drawer.

Signed-off-by: Chet Kener <Cl3Kener@gmail.com>