Merge pull request #1790 from adrianovieira/fix_speaker.email_public

Fix to only show speaker email if it's public

app/views/proposals/show.html.haml

@@ -36,7 +36,8 @@
             .col-md-8
               %h4
                 = link_to speaker.name, user_path(speaker.id)
-                = "(#{speaker.email})"
+                - if speaker.email_public?
+                  = "(#{speaker.email})"
               - if speaker.affiliation?
                 .text-muted
                   from