Created first scratch for database storage
Written first database model for storing scan results.
Initiating model logic; introduced scan features; introduced class
hierachies.
Refactored lot of stuff, deleted some and added other.

Added abstract scan hierarchy; implemented file system scanning;
implemented audio file filtering.

Refactored SQLite class abstractions (deleting the previous class
hierarchy).

Know this is lot of stuff for a single commit. Should've split it in
several more.
Added ScanRecordAdapter class for viewing scan record infos.
Changed tables internals.
Other minor fixes.
Added and improved main NavigationDrawer.
Moved adapter classes to newly created view.adapter package.
Refactoring all scan classes. Android already provides its own (LOL,
Android Beginner).
Added artist list view with adapter (no click handlers).
Artist and albums list view partially completed. Icon pictures still missing