Make choice renaming more discoverable

[jacobmercy]

It took me a really long time to figure out how to rename choices. Ideally, I'd like to be able to rename them in the QuickAdd main menu as well (double-clicking would be great). At the very least an icon next to the names in the choices panel would help to make it clear you can edit them.

[chhoumann]

I've added a right-click to rename and a pencil icon near the heading. Should be clearer in the next release. Thanks for opening this issue!