More keyboard shortcuts

[neongreen]

All shortcuts have to be documented somewhere; perhaps add “press ? to see keyboard shortcuts” under every editable field, instead of “press Enter to save” that we have now? Also, if we're going to leave editing controls in place, we could just write shortcuts next to the icons (and write them on buttons as well).

• [x] Escape to cancel editing a field
• [ ] Escape to cancel editing pros/cons or item/category info
• [ ] arrows to move between fields (like in Trello)
• [ ] maybe p to add a pro and c to add a con?
• [ ] e when hovering over anything to edit it
• [ ] ? to see help for shortcuts

[neongreen]

It might also be nice to always have a tooltip in the corner of the screen showing available controls, with the -control to do the thing you want to do- highlighted. Like, you hover on the pencil and the thing at the bottom highlights “e”.

[neongreen]

It might be even nicer to have the controls pop up annoyingly next to icons when you hover. To stop it from happening, set a checkbox in user profile. (To get an user profile, register.)