[2/2] Settings: Lockscreen Notifications

PS6:
    [2/2] Lockscreen Notifications: make offset top user configurable & add privacy mode

Change-Id: Ic66c0ff9d36bc390f5a434559468fe3752faf285

Conflicts:
	AndroidManifest.xml
	res/values/slim_dimens.xml
	res/values/slim_strings.xml
	res/xml/lockscreen_interface_settings.xml
	src/com/android/settings/SettingsPreferenceFragment.java
fix

Change-Id: Ifb28c4768b8dc741086623a0aab3bfd8410d5fd9