Fix: Better match between artists on the phone and MusicBrainz artists
by comparing them using trim() and equalsIgnoreCase().
Prepared Version 0.2-SNAPSHOT
Introduced Proguard Optimization
Added licenses to tests
Fixed NPE by provider (artists) when online at startup and device has
not finished initial scanning. 
Fixed/Worked around by delaying schedule on startup by 10 minutes.
Fixes:
- Service didn't start.
- GUI wasn't updated after refresh found new albums on manual refresh
- ProgressDialog wasn't shown when service was started before app (via
AlarmManager/Boot receiver)
Introduced plurals for notifications
Extended time of keeping the wake lock for service, as the service runs
in a separate thread.

Lock is release onDestroy()
Hopefully fixed the "A SQLiteConnection object for database was leaked!"
messages by explicitly closing the database onDestroy() of the main
activity.
Database leak: Provided constructor for tests
Database leak: Closing database in activity onDestroy() is no good idea
when working with services that also use database.
Removed preference for full/partial updates as it requires a lot more
logic to work properly.
Fix: GUI was not updated after refresh, when screen was switched off
when the refresh finished.
More tries to fix the problem of service not waking device up:
- AlarmManager sends broadcast, receiver acquires wakelock, then starts
service
- Try running after device woke up (RTP instead of RTC_WAKEUP)
- Removed flag PendingIntent.FLAG_UPDATE_CURRENT
Leave connectivity receiver "always on", as described in manifest. 
Don't disable component at runtime. Receiver now uses a preference to
trigger enable/disable. Hopefully, this is more reliable now.
Amount of days shown in "Just Added" tab is now the same amount of days
as the interval of refreshing.
That is, when the notification "New releases found" appears and is
tabbed uppon, the app shows exactly the newly added releases and not all
releases found in the last 7 days.
Merge branch 'master' of git@github.com:schnatterer/nusic.git