Gravity Perks - Limit Dates 1.1.27

Fixed an issue where conditional logic dependent on inline datepickers wouldn't work in some situations on multi-page forms.

Fixed issue with GP Read Only where the Datepicker would be initialized more than once causing a flash of unstyled content when using Legacy Markup.
Added "Update URI" to plugin header to improve security.

Improved minimum date to be the first selectable date in the range.