Switch to consistent usage of secrets via environment variables. Remove documentation generation from standard build. Some general POM polishing. A bit of release documentation.
Tweak build to contain a dedicated ci build profile for Javadoc creation post delombokification. Added an artifactory build profile to set up Artifactory deployment for milestones and snapshots.
Cleanups in sonatype build profile to avoid the definition of a snapshot repository to avoid snapshots accidentally be deployed there.
