aapt: localizations: be more aggressive

* errors instead of warnings for:
  * A localized string for which no default-locale version exist.
  * A localized translation of an translateable="false" string.

Change-Id: Ib700fe323019f285f5a1931fe96500b2de03106b
SystemUI: Fix aapt warnings

Change-Id: I4787997c0e586305f3030b3b3bda8d6145870f3b
Merge "aapt: localizations: be more aggressive" into cm-10.1
FIX Null Pointer Exception on dialog cancel

Null Pointer Exception occurs because mWebViewCore instance
is made to null while calling destroyJava(). When
1.webview hosting activity goest to background, without calling webview onPause().
2. If app is launched again (having launchmode:singletask ) and another activity (not  webview hosting) comes on top top.
3. It destorys the previous activity holding webview which internally tries to cancel the dialog, but webviewcore instance is null.
Null pointer exception is raised.

Change-Id: Idbcd30d0b0d4a35819444bbaa5c73cced8bb35a3
Signed-off-by: Amit Kumar <amitkecian@gmail.com>
Merge remote-tracking branch 'cm/cm-10.1' into cm-10.1