track numbers in All Tracks are useless

[Benjamin Kampmann]

Recently I saw that we have a small regression in the All Tracks controller. It now show the Track number in front of the filename. That is useless and - as the sorting is done by track title in this case - disturbing.

Way to reproduce it:
 * go into Music->Music Library ->All Tracks

Current result:
A list of all tracks with the track number is shown. That gives the impression they are not sorted alphabetically

Expected result:
a list of all your tracks sorted by the track name (in alphabetically order) and showing only that in the first line