Fix Fresh theme display on large screens
Fix catalog drop down list (#26)
Fix sort when browsing (#50)
Clean up Update

Remove some cruft, update some comments.
Increase supported sessionID length

Should fix GH #74
Update CHANGELOG
Add total duration to albums
Add Catalog::get_artists
Add Playlist::get_total_duration and Playlist::delete_track_number
Add Rating::get_highest
Add paging on searches
Add paging to Stats::get_top and Stats::get_newest. Add Stats::get_recent
Add paging on Tag::get_tag_objects
Add Subsonic API