Insert measures

All the Insert/Append Measure(s) commands work great except for the Ctrl-Insert one because it is the only one that requires a measure be selected first. It seems counter-intuitive to ask for a measure insertion count but to fail because no measure is selected. Just the act of asking seems like things are going to work. Then you need to select a measure and repeat all the things you just did to actually get the insert done.

It is more intuitive that measure selected check be done _before_ asking for a measure count. Or if something in the measure is selected, find what measure you are in and insert there. This way you know that, when you actually enter a measure count, it will work fine.