Allow entering more than one email address in addtional cc on the send ballot comments form. Fixes ietf-tools#1811. Commit ready for merge.

 - Legacy-Id: 10347

Author: rjsparks

ietf/templates/doc/ballot/send_ballot_comment.html

@@ -31,7 +31,7 @@ <h1>Send ballot position for {{ ad }} on <a href="{% url "doc_view" name=doc.can
 
     <div class="form-group">
       <label>Additional Cc Addresses</label>
-      <input class="form-control" type="email" name="extra_cc">
+      <input class="form-control" name="extra_cc" >
       <div class="help-block">Separate email addresses with commas.</div>
     </div>