Merge branch 'release/3.5.3-SNAPSHOT-1.0.3' into develop

* release/3.5.3-SNAPSHOT-1.0.3:
  Increase version
Merge branch 'master' into develop

* master:
Increase version number
Fix IT website links
Use correct namsid attribute name from AD
Upgrade to latest version (0.2.0) of cas-server-extension-duo
Use release version of Duo extension
Added storage of session data on the client

Currently, session info for login is stored in the tomcat session, but
this causes problems for clustering.  The new module created by Marvin
at VT stores session on the client, making the CAS servers less stateful
Use custom transcoder for web flow storage
Switch to new version of the client storage plugin

The new version uses cryptacular
Added static error page for users in T5 countries

Due to export restrictions, users are not allowed to access protected
resources from Cuba, Syria, Sudan, North Korea, or Iran.  This error
page explains the restrictions.  Mod_geoip in the apache server running
in front of tomcat will force the user to this page.
Update to latest version of Inspektr
Update version number
Fix conflict