Right-click menus

Currently, right-click menus are minimal, usually showing only Copy and Paste. It would be really nice to have right-click menus throughout the software.

For example, right-clicking a Cue should show me things I can do with a Cue, like Open, Show Output, Copy To, Update, etc.

The command line interface gets the job done, but if you don't know all the commands that apply, it can be challenging to learn.