restore transparent bluetooth for xhdpi & mdpi

Change-Id: I11dacffb27f1ad019118b828f0a458f922ba1df7
SysUI: Add fullscreen/PIE toggle, change global action string

Change-Id: Icdbda8826575789bd7e02c722ca4571c30f72be9

Conflicts:

	core/res/res/values/strings.xml
PIE: Restart launcher

Change-Id: I2660e5fed1d6d779f98dba23230b487f72c2ecf6

Conflicts:

	core/java/android/provider/Settings.java
PIE: slightly smaller as default

Change-Id: I69d4830c52c1116b5d44b5b73f3375d8a074c5da