Updated strings from Crowdin
Merge branch 'develop' of github.com:ankidroid/Anki-Android into develop
Bumped version to 2.3alpha29
@branch-specific
Fix backups and change to apkg
Merge pull request #491 from timrae/apkgBackups

Fix backups and change to apkg
Bumped version to 2.3alpha30
@branch-specific
Fix importing of apkg files from external intents and make shared decks download via browser
Merge pull request #492 from timrae/sharedDeckInBrowser

Fix importing of apkg files from external intents and make shared decks download via browser
Bumped version to 2.3alpha31
@branch-specific
Add exporting code to libanki
Merge pull request #494 from timrae/apkgBackups

Complete APKG exporting
added histogram for cards review count and cards relearn count
added ease histogram statistics
reintegrate kanji info
fixed kanji read line null handling