[1/2] Settings: Clock on lockscreen

Allow to enable status bar clock on lockscreen (default off)

AICPfy
PS2: edit string and add summary

Change-Id: I9838425a4298a3cea7f3291243a85985bc7823b7

Conflicts:
	res/values/strings_aicp.xml
	res/xml/aicp_lockscreen.xml
	src/com/android/settings/aicp/Lockscreen.java
Heads Up custom colors, (2/2)

Conflicts:
	res/values-de/dk_strings.xml
	res/values/dk_strings.xml
	res/xml/heads_up.xml
	src/com/android/settings/darkkat/headsup/HeadsUpSettings.java