MAGETWO-54631: Datepicker UI issues after validation fails on Report pages

Author: Oleksandr Dubovyk

lib/web/mage/backend/validation.js

@@ -11,6 +11,7 @@
             "underscore",
             'Magento_Ui/js/modal/alert',
             "jquery/ui",
+            "jquery/validate",
             "mage/translate",
             "mage/validation"
         ], factory);