Update rq-dashboard to 0.5.1

[pyup-bot]

This PR updates rq-dashboard from 0.3.12 to 0.5.1.

Changelog

0.5.1

* Remove unused async parameter in wrapper method signature, which breaks Python 3.7 compatibility

0.4.0

- Mark as incompatible with RQ 1.0 (see 172 for details)
- Add first/last page links to pagination (Thanks Yeray Diaz Diaz)
- Fix 404 errors in docker (Thanks skullY)
- Add confirm modal for dangerous action (Thanks Gerard Sole)
- Enable copy-paste in Jobs table (Thanks Gerard Sole)
- Drop support for EOL Python 2.6 (Thanks Hugo)
- Add Cache-Control header to API
- Update jquery version (Thanks caub)

Links

• PyPI: https://pypi.org/project/rq-dashboard
• Changelog: https://pyup.io/changelogs/rq-dashboard/
• Repo: https://github.com/eoranged/rq-dashboard

[pyup-bot]

Closing this in favor of #484