Fix error on datepicker in Admin to choose a past date before the current day

templates/themes/kohinos/bundles/SonataAdminBundle/standard_layout.html.twig

@@ -519,8 +519,9 @@ Modified for MLC from Sonata package.
                 isRTL: false,
                 showMonthAfterYear: false,
                 yearSuffix: '',
-                minDate: 0,
-                maxDate: '+12M +0D',
+                minDate: '-5Y',
+                yearRange: 'c-5:c+3',
+                maxDate: '+3Y',
                 numberOfMonths: 2,
                 showButtonPanel: true
                 };