Added support for actually adding user to organization

...tory-manager/src/components/myorg/OrganizationDetails.jsx

...a/com/example/accessingdatamysql/auth/AuthController.java

...a/com/example/accessingdatamysql/item/ItemController.java

...ample/accessingdatamysql/myorg/MyOrgRosterRepository.java

...example/accessingdatamysql/myorg/OrgRosterController.java

...e/accessingdatamysql/request/CustomRequestRepository.java