Settings: Quiet Hours System Sounds (2/2)

Change-Id: If5df8bf5e3a1d201ade5f317c49b1c877cd499d9
merge changes from Slim kk4.4 into local branch
Settings: Slimrecents background color && transparency [1/2]

Allow user to specify background color and transparency level
    for the slimrecents panel.

PS: now setting sticks through reboots and TRDS state
        changes. also, add reset to default color option.

PS: when resetting to default, use TRDS (png) resources
        instead of custom color

PS: properly set preference summary for default
        value ("TRDS default")

Change-Id: I8dd2543a3201b36f8c310de0da54f2f91ca474ef

Conflicts:
	res/values/slim_strings.xml
	res/xml/accessibility_settings.xml
	src/com/android/settings/accessibility/AccessibilitySettings.java