Add progress for generating "results as XLSX" file to download

tailbone/templates/master/index.mako

@@ -295,6 +295,13 @@
   ${parent.modify_this_page_vars()}
   <script type="text/javascript">
 
+    ## TODO: stop checking for buefy here once we only have the one session.pop()
+    % if use_buefy and request.session.pop('{}.results_xlsx.generated'.format(route_prefix), False):
+        ThisPage.mounted = function() {
+            location.href = '${url('{}.results_xlsx_download'.format(route_prefix))}';
+        }
+    % endif
+
     ## delete single object
     % if master.deletable and master.has_perm('delete') and master.delete_confirm == 'simple':
         ThisPage.methods.deleteObject = function(url) {
@@ -453,4 +460,14 @@
         ${h.csrf_token(request)}
         ${h.end_form()}
     % endif
+
+    ## TODO: can stop checking for buefy above once this legacy chunk is gone
+    % if request.session.pop('{}.results_xlsx.generated'.format(route_prefix), False):
+        <script type="text/javascript">
+          $(function() {
+              location.href = '${url('{}.results_xlsx_download'.format(route_prefix))}';
+          });
+        </script>
+    % endif
+
 % endif