Fix F/C in TTS settings

This is an attempt to fix uncaught MissingResourceException
that would be thrown if default language of selected engine is
set to a locale that has no 3-letter country/language code.

Please see https://code.google.com/p/android/issues/detail?id=63122

Change-Id: Iccb2a55f5f7a97819310fd888559650fe7febe4a
Signed-off-by: Shuhrat Dehkanov <k@efir.uz>
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 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 elapsed time formatting.

We should extend DateUtils to provide this kind of elapsed time
formatting via icu4c, but for now let's at least fix our
arithmetic.

Bug: https://code.google.com/p/android/issues/detail?id=61479
Change-Id: I6c087dbb9fdbff0a21d9243d239126fee180454c