Summary:
Try to avoid icon names containing "amarok" in order to
use more common icon names, which they are symlink of.
Only remaining icon is "media-show-active-track-amarok"
for which there is no standard replacement.

Reviewers: ngraham, mgallien

Reviewed By: ngraham, mgallien

Differential Revision: https://phabricator.kde.org/D22921