ISN Resident

Invalid date

* New validation when creating a visitor to avoid confusion with generic error messages
* Now you can directly invite when you create or edit a visitor.
* Now you can add phone or email to receive notifications although I do not have notifications enabled.
* Fixed a bug when editing vendors that forced to select the company again.
* Fixed a bug that in some cases the application kept loading in the visitor list.
* Bug fixes and performance improvements.