Refactoring & some features

Use db instead of temporary Lists in memory, some features implemented like instant filters (long press on albumArt area), a lot more possiblities for futher development.

Should be stable, app start/stop/pause improved, but still some memory issues. (terminating and restarting will cause duplicated observers, no idea why the references are still set)

Dont know which Font style you were using, so genre icon in file chooser is a bit ugly. I added a original folder in main dir to add Pics kepping their layers.

Soooo, check it out...