Allow date picker for browsers that do not support it natively. See issue #535

public/js/ff/transactions/single/create.js

@@ -20,6 +20,14 @@ $(document).ready(function () {
         updateDescription();
     }
 
+    if (!Modernizr.inputtypes.date) {
+        $('input[type="date"]').datepicker(
+            {
+                dateFormat: 'yy-mm-dd'
+            }
+        );
+    }
+
     // get JSON things:
     getJSONautocomplete();