Changes:
- Hide workers list if there are many than 8 workers
- Properly align page (move workers toggle to header)
- Add a link to rq-dashboard-on-heroku (thanks Paul Melnikow)
- Update dependencies (thanks dependabot)
- Expose dashboard HTTP port 9181 in Dockerfile (thanks Enrico)
- Switch to pytest for running tests
- Add worker's RQ and Python versions to dashboard (for RQ > 1.1, currently from master)
- Convert README to markdown
- Set up test runs against different RQ versions
- Remove requirements.in, we are using dependabot now
- Use rq 1.1.0 by default (in requirements.txt)
- Add favicon