Allow links in job log output to be clicked
### Problem to solve
Sometimes our job logs include links, like this:

It would be cool if these links could be clicked and followed. Right now, to follow the link, the user has to copy/paste the link from the output into the address bar.
### Intended users
gitlab-ce~9335216
### Proposal
Make links in job output clickable. Clicking the link should open the link in a new tab.
### Further details
Perhaps the link should only become enabled when <kbd>Ctrl</kbd> or <kbd>Cmd</kbd> is pressed - this would be similar to how [iTerm](https://www.iterm2.com/) handles links.
issue