Use stopImmediatePropagation to stop nested autocomplete clicks from cascading

I have a situation in which the "not found" formatted HTML contains an "add" form, which includes autocompletes itself, and the boxClick in the inner one would trigger events in the outer one without this.
I have a situation in which the "not found" formatted HTML contains an "add" form, which includes autocompletes itself.

I haven't fully resolved this issue yet though, so this pull-request is incomplete/premature.