Fix the position of the cover art popup.
Moved icons to ui directory and make Qt ui files.

Regenerated the ui modules with retranslateUi() infrastructure.
Use an efficient array to store visible items in Library forms.
Use a trie structure to store info in the mpdlibrary.
Add performer and composer to the artists list.
cd to the directory containing the main pythonfile.
Communicate boolean values as integers to mpd.