Goal: Create a clear and more formal Wikibase Suite Distribution story

• Remove versions from repo and rely upon build directory, with metadata in that directory and git tags to signify previous versions
  • Upgrade test suite will need to be revised accordingly

• Make example/docker-compose.yml run all services, and create a new optional docker-compose.minimal.yml which inherets service definition from example/docker-compose.yml, deprecating example/docker-compose.extra.yml

• Consider moving extra-install.sh into Docker/Wikibase

• 🚨 Make Github versioned release packages of what currently goes in the example directory

• 🚨 Consider moving these releases to a new Github repo called wikibase-suite (i.e. wikibase-suite/releases)