Add dependency packages at Manifest.json

Author: goldim1993

Manifest.json

@@ -43,6 +43,8 @@
     }
   },
   "requires": {
-    "@qooxdoo/framework": "^7.5.0"
+    "@qooxdoo/framework": "^7.5.0",
+    "qooxdoo/qxl.versionlabel": "^2.0.0",
+    "qooxdoo/qxl.formdemo": "^2.0.0"
   }
 }