Copy and paste unit Id list/on executed list

[sooooosh]

When working with enable unit and disable unit, it can get quite annoying when you have to enable and disable a lot of units at once. Being able to copy the whole list of unit IDs from one element and paste it in the other would speed things up a lot.
Copy-pasting element IDs in the on executed list from one element to the other probably wouldn't be that useful, but for consistency it probably can't hurt having it.