1. Probably need to explicitly show legend/recap which shortcut triggers what.
2. In this PR, shortcuts are really working/not working based on which page you are. That might make sense for some things (specific conversation shortcuts) but if we ever want to introduce shortcuts which tackle more than a single conversation, something different may be needed.
3. To expand on number 2, as I user I might be frustrated if some shortcus is working on page A and not working on page B even though it may not make sense to work it on page B. I guess it really depends on the context.