[maven-release-plugin] prepare release jackrabbit-filevault-3.1.0

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/commons/filevault/trunk@1582497 13f79535-47bb-0310-9956-ffa450edef68
[maven-release-plugin] prepare for next development iteration

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/commons/filevault/trunk@1582499 13f79535-47bb-0310-9956-ffa450edef68