Feature request: Ability to reorder segments in advanced workout editor

[dhicks]

Currently there doesn't seem to be anyway to reorder the segments in an advanced workout. For example, I recently got a HR monitor, and after putting together the workout in the screenshot I realized it would be useful to start off with a 2-minute zone 1 segment as a warmup. But it seems like, to add this, I would have to delete all of the other segments, add the new segment, and then re-add all of the other segments.

[gerhardol]

This is a little tricky to do, up for grabs.