ID verifier: pass through original response if ID rejected.

The photo validity fields were being lost when returning a response to
the client. Just keep the original response from the verifier human,
sanitize out any identity it might contain, and send it to the client.
Issue #1000: Console user while awaiting verification
Issue #1000: Fix bugs, display status of verification request.

Bugfix: Do proper thread safety for callbacks to QML.
Voting GUI: Glow nagivation buttons that the user should click