Merge remote-tracking branch 'origin/MAGETWO-56396' into BUGS

Author: slavvka

lib/web/mage/calendar.js

@@ -552,7 +552,7 @@
         //Set date/time according to timezone offset
         $(el).datepicker('setTimezoneDate')
             // To ensure that user can re-select date field without clicking outside it first.
-            .blur();
+            .blur().trigger('change');
     };
 
     return {