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
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_packages_apps_Settings into android-4.4

Conflicts:
	src/com/android/settings/SecuritySettings.java

Also Change Gesture Lockscreen to new LockScreenSecuritySettings.java