confusing UX when editing existing source or candidate

[tarheel]

If you click on a text box for an existing CVR source or candidate and edit the value, then click outside of the box, it looks like your change has been registered. But it actually hasn't; as the message above the table says, you have to hit Enter to make it stick. Can we change the behavior so that clicking outside of the box either a) updates the underlying config object or b) reverts the rendered string to the existing value in the object?

[tarheel]

No longer relevant because we disabled editing in #519 and #522.