Changes to the numbering of the GUI to make it easier to follow logically

Renumbered the items in the GUI and the sonosGUI file to make it easier for people to use their own GUI.

Also changed the queue display in the queue as sonosplayer.js was making direct reference to the GUI thereby breaking the GUI abstraction

Changed the number of rows pulled back in the music sources to allow iPad1 to respond a bit more quickly

Signed-off-by: Simon Post <simon.post@cpw.co.uk>