fix an issue with the scroll bar appearing on the confirmation dialog and insure that dialog is removed if cancel is pressed, so we can correctly reshow it if required.

modules/gallery/views/admin_identity.html.php

@@ -12,7 +12,7 @@
           bgiframe: true,
           title: <?= t("Confirm identity provider change")->for_js() ?>,
           resizable: false,
-          height:165,
+          height:180,
           modal: true,
           overlay: {
             backgroundColor: '#000',
@@ -20,10 +20,10 @@
           },
           buttons: {
             "Continue": function() {
-              $("##g-dialog form").submit();
+              $("#g-dialog form").submit();
             },
             Cancel: function() {
-              $(this).dialog('close');
+              $(this).dialog('destroy').remove();
             }
           }
         });