SonarQube must not be released from a local box. The released artifacts should be generated by CI environment (Travis).
- enabling the Maven profile release on Travis for maintenance branches "branch-*"
- generate javadoc (requirement to push to Maven Central).
- official branding
- remove distributionManagement from pom as artifacts are pushed to repox.sonarsource.com and distributed to Bintray and Maven central thanks to the Distribution management feature of Artifactory