Settings: Remove lockscreen options from security.

  - Create a separate fragment for Lockscreen settings
  - Move App Security up in Security Settings
  - General clean up

Change-Id: I4dc20942b87c2446c7e798e28f7e475efebaddb8
Settings: Fix missing preference when lockscreen disabled.

    - Introduced in security settings reshuffle.

Change-Id: I1b6b608682208396d5efc54fd985652f65e86ffc
Settings : Launch only contacts picker for blacklist entry

Change-Id: I266d1ad7f1aab745728b33490268cb197188f2b3
NFC polling mode (2/3)

Change-Id: Ic46ede10fa91f02ca73daa12aa60098c8a52ceef

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