Make 2.0.x the default branch in GitLab

Hmmm interestingly the issue fork on this very issue says "Create issue fork with new branch from 2.0.x". Not sure how that's working but even so the GitLab default branch still ought to be set to 2.0.x!!

Done, phew... thanks for the report and nudges and patience!

Automatically closed - issue fixed for 2 weeks with no activity.