[maven-release-plugin] prepare release 0.4.0
[maven-release-plugin] prepare release 0.4.0

codenvy/codenvy,codenvy/codenvy,R-Brain/codenvy,codenvy/codenvy,codenvy/codenvy,R-Brain/codenvy,R-Brain/codenvy,codenvy/codenvy,R-Brain/codenvy,codenvy/codenvy,R-Brain/codenvy,R-Brain/codenvy