Updates 2020

Goals:

• Add docker files
• Add and rework README
• "generify" parts of the setup process and file layout to make them work for both vagrant and docker
• Declutter base directory to separate files with different purposes

Major change overview:

• Move all files required by the webserver into data/
• Move all files used for Vagrant into vagrant/
• Added quick-vagrant.sh for quick(er) Vagrant setup
• Move all files required for provisioning into provision/
• Create all files used for Docker in docker/. Added Dockerfiles and some scripts to set it up a bit more automagically