Resolve "During export as map add warning pop up"

Closes #1447 (closed)

frontend-js/src/main/js/gui/ContextMenu.js

@@ -109,6 +109,7 @@ ContextMenu.prototype.addOption = function (params) {
   } else {
     self.getElement().appendChild(option);
   }
+  return link;
 };
 
 /**
@@ -184,7 +185,7 @@ ContextMenu.prototype.createExportAsImageSubmenu = function () {
     });
     var submenu = new SubMenu({
       element: li,
-      name: "Export as image",
+      name: "    as image",
       customMap: self.getMap()
     });
 
@@ -226,7 +227,7 @@ ContextMenu.prototype.createExportAsModelSubmenu = function () {
     });
     var submenu = new SubMenu({
       element: li,
-      name: "Export as map",
+      name: "    as map",
       customMap: self.getMap()
     });