Enable Back-key when go to Emergency call

When go to "Emergency call" from lock screen, back key is disappeared.
It is difficult for user to find the way to go back to previous screen.
This might be bad user experience. So we are going to make it enable.

Change-Id: Iefcca9b8943472c24ddbca6e3ec3441e93e5be91
Updated Simplified Chinese translations

Change-Id: I7c62d9fc7dafad4f121b6c92672e6c8ea4efea1a
Settings: Fix the memory leak in Settings

Fixed the memory leak in both InstalledAppDetails

Change-Id: I3520b3c1fe1bf98e3baec2ee989eb215164a7cf2
Signed-off-by: Zhijun Peng <pengzhj@marvell.com>
Merge "Enable Back-key when go to Emergency call" into kitkat
Merge pull request #2 from AOKP/kitkat

Update