Add help url for remote display.

Bug: 11736504
Change-Id: I83d278731cf853ff911ff1a8b82a942881cb4727
Put fragment in specific activity's whitelist

Change-Id: I782dc8ec29e49a834832dc8357b3fdb12846e8a9
Merge tag 'android-4.4.2_r2' of https://android.googlesource.com/platform/packages/apps/Settings into kk-devel

Android 4.4.2 Release 2