Code review comment for lp:~vthompson/music-app/fixes-1240610

Can you replace the ListItem.Standard with a transparent Rectangle so that it removes the extra spacer (horizontal grey bar) that is created at the bottom of the ListItem.

footer: Rectangle {
   color: "transparent"
   height: mainView.height - styleMusic.nowPlaying.expandedHeightCurrent + units.gu(8)
}