Changed new email address button text. Fixes ietf-tools#3134. Commit ready for merge.

 - Legacy-Id: 18695

Author: Spectre17

ietf/templates/registration/edit_profile.html

@@ -136,7 +136,7 @@ <h1>Profile information for {{ user.person.name }}</h1>
       <div class="col-sm-offset-2 col-sm-10">
         <div class="new-emails"></div>
 
-        <button class="btn btn-default btn-sm add-email">Open a new email address field</button>
+        <button class="btn btn-default btn-sm add-email">Add a new email address</button>
       </div>
     </div>