Allow email in submission link
From the google groups (Tobias):Submitted by Elmer van Chastelet on 15 September 2016 at 07:45
we have an editor who wanted to state that submissions to their track is via email, so for the "submission link" field in "Call for Contributions Page Content" (or similar) component, they entered
This also shows up on the final page. However, the // is wrong in a mailto link.