Remove old JS form validations (#1867) ...

* added new form validation error handling

added tests for orgs controller

converted over remaining controllers to new errors

enhanced message handlers in application controller

finished form validations

* fixed rubocop for all controllers

* Fix broken specs

- Factories needed to be updated to meet new validation requirements
- Spec was broken since error message had changed

* Fix errors and warnings from npm audit

Override flash alert message for when user is signed in and a URL invitation token is provided. DMPRoadmap/roadmap#751 ...

Modified message. DMPRoadmap/roadmap#751