Branch for 2.2
Catch more errors
Fix widget icon to only be 1x1 instead of 2x2 on most devices
Duck background audio

Use AudioManager's audio focus to grant transient audio focus from other apps.
Not all media players respect audio focus, but with a well behaved media
player like Google Play Music, this will lower the volume during
playback of audio from AnkiDroid, and then return the volume to regular
level after it's finished. This is identical to what Google Maps uses to
bring focus to driving directions while playing music from another app.
Fix unbury only available at congrats screen
Skipped '19109d0' from release-2.1: Bumped version to 2.1beta1
Merged '153d472' from release-2.1: Fixed FEFF character
Merged 'b84d4b3' from release-2.1: Fixed scraper for new website
Merged '9ee69b4' from release-2.1: screenshot
Merged '780bea6' from release-2.1: ready for use
Merged '3a35d37' from release-2.1: Updated transaltions from Crowdin, fixed CDATA syntax errors in XML and on Crowdin
Skipped '549a44f' from release-2.1: Bumped version to 2.1beta2
Merged 'f2ca4c5' from release-2.1: Fixed many syntax errors on Crowdin
Merged '1b9d45f' from release-2.1: Filter more
Merged '2214e79' from release-2.1: More Crowdin fixes
Merged 'b5628af' from release-2.1: Correct question audio repeat, by deck options.
Skipped 'b8b8533' from release-2.1: Bumped version to 2.1beta3
Merged 'a492a97' from release-2.1: Added 6 languages: gl he hi lt sk sl
Merged '71d9cd0' from release-2.1: Fixed translations
Merged '9d7836b' from release-2.1: Fixed translations