Changes

fix: fixes typo in UserService @RolesAllowed annotation
This commit just fixes a typo that made the UserService EJB not work as 
expected.

fix: makes Story entity primary key not modifiable
The autogenerated identifier we use as a surrogate key is not meant to 
be edited by end users, and cascading these modifications to tables with 
a FK to the Story entity table might get messy.

tsk55: adds authentication checks to EJB create story method
This commit also changes the related tests accordingly.