QuickSettings: Add LTE Tile (1 of 2)

Patchset 3 - Add proper drawables and update logic
Patchset 4 - Rebase
Patchset 5 - Fix build errors

Thank you to Bjorn Lunden for the drawables

Change-Id: Ia25d098020586e06d38589f84d3d1a581e7cbd9a

Conflicts:

	packages/SystemUI/res/values/strings.xml
	packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickSettingsController.java

Fixes for LTE Toggle

Additional fixes for LTE toggle...

(cherry picked from commit 00ef829ab696aecc5e407c90d5153f06f8b6dd91)
Fix hardware home key behavior on wake-up

Change-Id: Ib489e4b8bb1d10591afc96c680c7865d61c959a0
(cherry picked from commit 07dd3ae7a40690b1223ec3294aed5382c43be557)