[maven-release-plugin] prepare release attender-bridge-3.3.1

git-svn-id: http://code.seajas.com/svn/search/attender-bridge/trunk@238 6d16f689-0e44-489b-baa0-7e47ada2b36c
[maven-release-plugin] prepare for next development iteration

git-svn-id: http://code.seajas.com/svn/search/attender-bridge/trunk@240 6d16f689-0e44-489b-baa0-7e47ada2b36c