Final Contributions - Juan Torrente

- Set up RestAPI tests to use an in-memory mongodb instance, allowing them to be integrated on the pipeline. #127, #128.
- Set up Grafana monitoring on Prometheus. Also, included prom/node-exporter on the docker-compose-deploy.yml file and into the deployment metrics stack. Built the queries and interface for the Grafana panel. #146.
- General work and bugfixing on the CI pipeline. #158, #77.
- Tweaked the webapp Dockerfile to build the application and serve it for production. #172, #171.
- Documentation update and rewriting. #173, #46.
- Set up a NGINX reverse proxy on the deployed machine, and configured it to force HTTPS (needed for SOLID calls) and route traffic to the docker instances. No pull request for this one, but #77.