Settings: Forward port Kill app longpress back

Based on http://review.cyanogenmod.org/#/c/27235
Original author: DaneshM

Change-Id: I6e8bfb4e7e4a35c321a01debf8fdb3a38120267b
Merge "Settings: Forward port Kill app longpress back" into cm-11.0
Merge branch 'cm-11.0' of git://github.com/CyanogenMod/android_packages_apps_Settings into cd-4.4