Features: job bar click and dark mode

[void-nick]

Greetings again.

If I don't succeed on having free time to help on this project, maybe taking note of the following features here can help other contributors with free time to implement them:

1. On the dashboard, it should be possible to click on the job count bar and be redirected to the queue tab of the same state. E.g.: clicking on the red (failed) bar of a queue would open the queue failed tab;
2. Dark mode 🙏

[felixmosh]

There is a feature request for darkmode #471