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
Merge branch 'kitkat-remix' of github.com:AOSPAL/android_packages_apps_Settings into kitkat-remix
[3/3] Settings: Audio Themes Settings

Change-Id: I8aad04a642441b91617943e6941841aec859396d

Conflicts:
	res/xml/sound_settings.xml
Merge remote-tracking branch 'settings/kitkat-remix' into remix-legacy