Add Google Wallet donation option.
Add option for ignoring empty notifications.
Add support for more audio streams: Voice, Ring, Alarm
Set audio focus and ignore empty defaults to true.

Update support_summary string.
Fix handling of TTS initialization.

-Handle TTS init error by showing toast and not attempting to speak.
-Hold subsequent messages until TTS is initialized, then add to queue.

A few other minor tweaks in Service class.
Update Italian translation and bump version.