Add ability to group select in Play Queue Edit mode

[eharris]

There doesn't seem to be a way to easily select a range of tracks in the play queue edit mode, I have to tap on each track individually to select it. Any attempt to drag ends up scrolling the list, even if it started as a select/deselect action, and the select/deselect is undone once it starts scrolling.

It would be nice if there was a way to do this, perhaps tap-and-drag but only on the selected radio button? Or tap-and-hold-then-drag, and selecting while near the top or bottom of the screen causes the list to scroll while selecting more?