Debug email to referees upon resubmission

templates/email/submission_cycle_reinvite_referee.html

@@ -4,7 +4,7 @@ The authors of submission\n\n
 
 {{invitation.submission.title}} by {{invitation.submission.author_list}} \n\n
 
-have resubmitted their manuscript to SciPost. On behalf of the Editor-in-charge {{invitation.submission.editor_in_charge.get_title_display}} {{invitation.submission.editor_in_charge.last_name}}, we would like to invite you to quickly review this new version.\n
+have resubmitted their manuscript to SciPost. On behalf of the Editor-in-charge {{invitation.submission.editor_in_charge.get_title_display}} {{invitation.submission.editor_in_charge.user.last_name}}, we would like to invite you to quickly review this new version.\n
 Please accept or decline the invitation (login required) as soon as possible (ideally within the next 2 days).\n\n
 
 If you accept, your report can be submitted by simply clicking on the "Contribute a Report" link on the Submission's Page before the reporting deadline (currently set at {{invitation.submission.reporting_deadline|date:'N j, Y'}}; your report will be automatically recognized as an invited report).\n\n

templates/email/submission_cycle_reinvite_referee_html.html

@@ -11,7 +11,7 @@
     <br>
     (<a href="https://scipost.org{{invitation.submission.get_absolute_url}}">see on SciPost.org</a>)
 <p>
-    have resubmitted their manuscript to SciPost. On behalf of the Editor-in-charge {{invitation.submission.editor_in_charge.get_title_display}} {{invitation.submission.editor_in_charge.last_name}}, we would like to invite you to quickly review this new version.
+    have resubmitted their manuscript to SciPost. On behalf of the Editor-in-charge {{invitation.submission.editor_in_charge.get_title_display}} {{invitation.submission.editor_in_charge.user.last_name}}, we would like to invite you to quickly review this new version.
     Please accept or decline the invitation (login required) as soon as possible (ideally within the next 2 days).
 </p>
 <p>