Settings: Fixed force close issue when the window is shown without the action bar (tablets)

Change-Id: Id4d9be361dec60a14e7fc26a4b9b7d2906c4abe3
Fix memory leak in ManageApplication

ApplicationsAdapter new a Session member and make it has a reference to
it self. If we don't release it explicitly, the cross reference will
cause memory leak.

Change-Id: Iecce35ae1d56d98cee6347e84d3a3ff57f3b15a5
fix a potential memory leak by adding onDestroy in case settings is killed

Change-Id: Ie5f53969d583a898739caeec49b972c5e1cb69d9
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>
Fix WifiManager melory leak, change context to getApplicationContext

Change-Id: Iba90045c4e31537defeec7a6f965d3b764065864
Signed-off-by: annieyu <annieyu@huaqin.com>