Update build process and eXist-db
This MR updates the whole build process according to the latest SADE version of the build. This means more options and better performance since we don't pull from git anymore but use our DARIAH-DE-eXist-repo.
This MR updates the whole build process according to the latest SADE version of the build. This means more options and better performance since we don't pull from git anymore but use our DARIAH-DE-eXist-repo.