acq shouldn't be in context for THANKS

frontend/views.py

@@ -2699,6 +2699,10 @@ class DownloadView(PurchaseView):
             all_acqs=request.user.acqs.filter(work=work).order_by('-created')
             for an_acq in all_acqs:
                 if not an_acq.expired:
+                    # skip for THANKS
+                    if an_acq.license == THANKED:
+                        acq = None
+                        break
                     # prepare this acq for download
                     if not an_acq.watermarked or an_acq.watermarked.expired:
                         if not an_acq.on_reserve: