Switch library ads to snapshot version
Switch library release-test and plugin test-release to snapshot version
Switch library and plugin database to snapshot version
Switch library administration to snapshot version
Merge pull request #128 from codjo-sandbox/integration

For release 2.60
Switch libraries from snapshot to their future stabilized version
[maven-release-plugin] prepare release codjo-pom-2.60
[maven-release-plugin] prepare for next development iteration