Release script for automating releases

Added a deploy-release.sh script that does almost everything in the release template automatically. Outstanding issues is uploading and modifying files on S3.

All scripts has been moved to tools-dir.

Going forward this should ideally be executed on Jenkins and possible split into smaller scripts for easier management there.
You are right. There is a problem with this release script if you want to prepare additional samples/changes in the docs. That is not possible in this version until after the bintray artefacts has been deployed.

A solution could be to split it into two parts release-jars.sh and release-documentation.sh.
In either case, I doubt we can ever manually make a full blogpost. Perhaps create a template and add the files, but they would have to be manually editet afterwards. We could also detect if a index.md exists for the version we try to release and if it does assume that someone already handled the renaming of versions.

However, this might be edge cases, which we can handle down the line?