add email to metadata

lms/templates/user_metadata.html

@@ -22,6 +22,8 @@ user_metadata = {
 if user:
     user_metadata['username'] = user.username
     user_metadata['user_id'] = user.id
+    if hasattr(user, 'email'):
+        user_metadata['email'] = user.email
 
 for datekey in (
         'schedule_start',