Removing duplicate session storage in security context.

src/main/java/org/nrg/xnat/ajax/GrantProjectAccess.java

...rg/nrg/xnat/restlet/extensions/AuthenticationRestlet.java

...main/java/org/nrg/xnat/restlet/guard/XnatSecureGuard.java

...n/java/org/nrg/xnat/restlet/resources/SecureResource.java

src/main/java/org/nrg/xnat/restlet/resources/UserAuth.java

...main/java/org/nrg/xnat/restlet/resources/UserSession.java

src/main/java/org/nrg/xnat/security/OnXnatLogin.java

.../org/nrg/xnat/security/XnatBasicAuthenticationFilter.java

...java/org/nrg/xnat/security/XnatExpiredPasswordFilter.java

src/main/java/org/nrg/xnat/security/XnatInitCheckFilter.java

...java/org/nrg/xnat/security/XnatSessionEventPublisher.java

...nrg/xnat/turbine/modules/actions/AcceptProjectAccess.java

.../xnat/turbine/modules/actions/EditImageSessionAction.java

...nrg/xnat/turbine/modules/actions/ManageProjectAccess.java

...g/xnat/turbine/modules/screens/DefaultPipelineScreen.java

...org/nrg/xnat/turbine/modules/screens/InactiveAccount.java

...main/java/org/nrg/xnat/turbine/modules/screens/Index.java

.../org/nrg/xnat/turbine/modules/screens/PipelineScreen.java

...nat/turbine/modules/screens/RequestProjectAccessForm.java

...g/xnat/turbine/modules/screens/XDATScreen_EditScript.java