Create branch for Spring 4.0 migration
Update Spring Security to Spring 3.2.0
Update Spring Security config file
Update dependency for servlet api
Changed other config files to be used with Spring 4
Added simple echo websocket handler with spring 4
Merge branch 'master' into spring4
Update dependencies to current versions
Added PermissionEvaluator to replace AOP authentication check
Replacing Controller with RestController
Remove Spring WebSocket support
Changed web.xml due to Spring WebSocket removal