adding athlete last name to alert

rowers/tasks.py

@@ -1304,7 +1304,8 @@ def sigdig(value, digits=3):
 
 @app.task
 def handle_send_email_alert(
-        useremail, userfirstname, userlastname, rowerfirstname, alertname, stats, **kwargs):
+        useremail, userfirstname, userlastname, rowerfirstname, rowerlastname,
+        alertname, stats, **kwargs):
 
     if 'othertexts' in kwargs:  # pragma: no cover
         othertexts = kwargs['othertexts']
@@ -1356,6 +1357,7 @@ def handle_send_email_alert(
         'enddate': stats['enddate'],
         'siteurl': siteurl,
         'rowerfirstname': rowerfirstname,
+        'rowerlastname': rowerlastname,
         'alertname': alertname,
         'othertexts': othertexts,
     }