Add the Number Spinner from jQuery
Fix bug that none Contact Form 7 date fields was transformed

git-svn-id: https://plugins.svn.wordpress.org/contact-form-7-datepicker-fix/trunk@752468 b8457f37-d9ea-0310-8a92-e5e31aec5664
update version to V2

git-svn-id: https://plugins.svn.wordpress.org/contact-form-7-datepicker-fix/trunk@752469 b8457f37-d9ea-0310-8a92-e5e31aec5664