Content-editable spellcheck

[daemontus]

Currently, we use content-editable divs for some of the inputs. In some of them, it would be nice to have the spell check enabled. However, it does not look very nice when the red underlines stay in the text even when it is not focused.

TL;DR: We need to enable spellcheck for content-editable only when focused.

Problem: The only event of user leaving the input is focus event and once the div is not focused, the red underlines won't be redrawn, so we need to figure out how to remove them manually?