Added alter hook to allow modules to modify the ticket that was generated. ...

Added alter hook to allow modules to modify the ticket that was generated.  Used on a client site to create a more secure ticket rather than the one in the module that seemed to be focused on usability/readability.  Also refactored ticket expiration into it's own function so that it could be called by other modules.  Need to backport these changes to 5.x and roll a release for 5.x as well.