Fix problem caused by race condition in scope creation

Now the scope is set whether or not the scope creation is successful.
This ensures that if two connections try to create the same scope at
the same time, both will end up with the right scope.
Merge pull request #15 from mdalepiane/patch_scopes

Fix problem caused by race condition in scope creation
Updated deps
Merge branch 'master' of github.com:Red5/red5-server
Removed redundant io classes
Latest build
Updated tomcat and added websocket plugin
Updated configs and assembly xml
Update README.md

Added previous releases