[1/2] Permit home button wake to be configurable

To activate, enable bool config_show_homeWake in
device overlay/packages/apps/Settings/res/values

Change-Id: I00afe89ba5bf36d74b93a40b9d15eef2e805611f

Conflicts:
	res/values/cm_strings.xml
	res/values/config.xml
	res/xml/display_settings.xml
	src/com/android/settings/DisplaySettings.java
HALO: Option to pause the underlying app (2/2)

- adds an option to pause the active app when using HALO
- this is enabled by default for devices with low memory
- (currently: <640MB RAM available to the kernel)
Merge remote-tracking branch 'upstream/jb-mr1' into jb-mr1