Bug fix/internal issue 1983 (#6746)

CHANGELOG

@@ -1,6 +1,9 @@
 devel
 -----
 
+* fixed internal issue #1983: the Web UI was showing a deletion confirmation
+  multiple times.
+
 * removed bundled Valgrind headers, removed JavaScript variable `valgrind`
   from the `internal` module
 

js/apps/system/_admin/aardvark/APP/frontend/js/views/indicesView.js

@@ -217,9 +217,11 @@
     prepDeleteIndex: function (e) {
       var self = this;
       this.lastTarget = e;
-
       this.lastId = $(this.lastTarget.currentTarget).parent().parent().first().children().first().text();
-      // window.modalView.hide()
+
+      if ($('#indexDeleteModal').length) {
+        return;
+      }
 
       // delete modal
       $('#content #modal-dialog .modal-footer').after(