Allow faster editing #124

I'm currently updating a few desciptions on things, and while gallery has a number of useful keyboard shortcuts, I can't seem to use ctrl+enter or similar to hit submit. I'd like to be able to go through a folder and update description and members for a number of objects entirely using the keyboard. This is achievable using tab based navigation, which is a very workable option, but ctrl+enter has become a default reflex for me because of things like github

Possibly worth spinning off another issue for: is there anywhere other than the keyboard shortcuts help menu that mentions there are keyboard shortcuts?