When I close a window, my changes shouldn't be lost

Summary: From Eric: "If you type in a comment for a Review, then close the window before changing focus, the comment is lost, even with a reasonable pause between the end of typing and the window closing." More generally, closing a window while in the middle of an input should ideally save the input somehow.

More from Eric: "Expected behavior would be either: a) Autosave edit field with current focus prior to closing the window; or b) Throw up an "You have unsaved edits" dialog.

(In this case, (a) is vastly preferable, both for ease of use and because there is no actual "Save" button, which could cause some confusion...)"

I am not sure whether (a) is technically possible, but we may want to think about some combination of (b), periodic auto-saves, and possibly trying a saving-throw save on close? Do some research...

Later: this also applies to other forms of navigating away. For example, in the Lochleven space, I often use the "go to thing" button from the live editor. If I haven't clicked away from my last edit, it is lost. So we need to be fairly aggressive about checking the state of all editable fields.