looking at the source of your page, i see both jquery tags still there.
the webassist jquery tag is needed for the date picker, the first one needs to be removed.
as for the validation, many of the fields only have an invalid format message, and the required message is left blank:
<span class="textfieldInvalidFormatMsg">Invalid format.</span><span class="textfieldRequiredMsg"> </span>
for exmple, if i enter text in the phone number, an invalid format message displays, but leaving it blank, no message displays, because there is no required message entered.