Adjust github actions to run more probably failures first, with --fail-fast

[CloCkWeRX]

The average time for our CI is around 25 minutes, regardless of success or failure:

We have a lot of automated PRs as well.

If model, controller or view tests fail; it's very likely that selenium based tests would also fail.

Looking at other similar projects like https://github.com/fatfreecrm/fat_free_crm/runs/2557117715?check_suite_focus=true I've seen benefit from early failures/termination.