Fixes #1058 third point
Fixes #1058 first point

And a bug in the third point commit
Fixes 6th point in #1058

validator should be shown only if a question exists
Fixes 2nd point in #1058

Wrong validation when submitting registration with empty captcha and/or
security question
Merge pull request #1086 from PirataNervo/featurefix-1058

Fixes #1058 Registration Questions issues