Active display: Add options for date and am/pm [1/2]

Change-Id: Idc09772829cc6aa9bcfb064459fb3557c7b37f6b

Conflicts:
	packages/SystemUI/res/layout-land/active_display_content.xml
	packages/SystemUI/res/layout-sw600dp/active_display_content.xml
	packages/SystemUI/res/layout/active_display_content.xml
	packages/SystemUI/res/values/dimens.xml
	packages/SystemUI/res/values/donottranslate.xml
	packages/SystemUI/src/com/android/systemui/statusbar/policy/activedisplay/ActiveDisplayView.java