Optimize loading of station art images.
Add basic support for 'thumbs up' and 'thumbs down'.
Consolidate some AJAX logic into transceive().
Song data now stored in an array of objects.

The model now makes the playlist array of song
objects available to the rest of the application
and these objects are now used as a data source
rather than very specific individual properties.
Several improvements to the Now Playing Tab.
Fix broken song rating functionality.
Show star for current art when thumbs-up given.
Code cleanup.
Remember passwords and support log outs.

Panpipe now uses Qt local storage and blowfish
encryption to remember the username and password
most recently used. A log out action was also
added. This action clears the currently loaded song
and station data and the stored username and password.
Arrow icons replace thumbs-up and thumbs-down.
Added click packaging with apparmor profile for audio