Add traefik docker compose files

[ineiti]

There are now two files on the srv-epfl-2:

• /home/traefik/docker-compose.yml
• /home/d-voting/d-voting/docker-compose/docker-compose.dela.yml

Put these two files in a PR together with a README.md.
Also clean them up a bit to have nice names.

[ineiti]

Currently working on actually making these files work, as the node-2-node communication doesn't seem to be setup correctly.

[ineiti]

@PascalinDe is this what you are doing currently?

[ineiti]

Add it to the Wiki.

[ineiti]

There is a new repo for the moment: https://github.com/c4dt/dela-scripts