Get search URL from action attribute
Improved View::render and added View::factory
Lots of changes

Split BrowseSongs into SongIndex and Search
Added BookIndex
Added Home
Added menu links in header
Various style fixes
Header fixes
Responsiveness and style cleanup

Also removed activity indicator
Deleted unused jquery.transposer
Deleted unused ajax.gif
Deleted unused Model_Key
Header style cleanup
Added some jquery ui style adjustments
Added Arr and HTTP helper classes
Updated jQuery versions and changed UI theme
Removed unused Controller_Song::get_xhr
Added song meta

List books a song is found in
List examples of a song from spotify
Cleaned up DB by adding a simple Query class
Added mustache hack for empty lists
Not return FALSE on empty Query::fetchAll result
Query comment
Added next and previous links
Added file with chords

Might use later to improve "chord finder algorithm"...
Made 'previous' link actually go backwards