Forward port Quiet Hours settings

Change-Id: I57ad089a2b2f7d6ed3df773ca69ad67f7b8fe185

Conflicts:
	res/values/strings.xml
	src/com/android/settings/SoundSettings.java

 Author:    DvTonder <david.vantonder@gmail.com>
 Changes to be committed:
	new file:   res/layout/preference_time_range.xml
	modified:   res/values/strings.xml
	new file:   res/xml/quiet_hours_settings.xml
	modified:   res/xml/sound_settings.xml
	modified:   src/com/android/settings/SoundSettings.java
	new file:   src/com/android/settings/cyanogenmod/QuietHours.java
	new file:   src/com/android/settings/cyanogenmod/TimeRangePreference.java
rename paths

...

 On branch rz-4.2
 Changes to be committed:
	modified:   AndroidManifest.xml
	modified:   res/xml/quiet_hours_settings.xml
	modified:   res/xml/settings_headers.xml
	modified:   res/xml/sound_settings.xml
	renamed:    src/com/android/settings/cyanogenmod/QuietHours.java -> src/com/android/settings/raumzero/QuietHours.java
	renamed:    src/com/android/settings/cyanogenmod/TimeRangePreference.java -> src/com/android/settings/raumzero/TimeRangePreference.java