Fix for #1701

This pull request fixes the dateTime issues mentioned in #1701. Changes made are:

* The jquery.validate plugin doesn't support localized date values, so we need to override the default validation
* The timepicker addon version used doesn't support a $.datepicker.parseDateTime function, so we'll have to update to jquery-ui-timepicker-addon-1.31 in order to use $.datepicker.parseDateTime(convertedDateFormat,convertedTimeFormat,value)
* The jQuery UI datepicker version used doesn't allow further characters after the date, so we'll have to update jQuery UI too to not break the $.datepicker.parseDateTime method (see jquery/jquery-ui#375)
* added the fieldType parameter to the _setProperty function in HibachiTransient
* overwritten _setProperty function in HibachiEntity and added custom dateTime parsing there