[atlas] Delays over the weekend

Dear all, Some of you have noticed that there were delays in how RIPE Atlas behaved, starting on Saturday. This happened because of an issue deep in the bowels of the infrastructure which caused tasks (including measurement requests) to pile up. We believe the issue has been resolved by now, though we're still investigating the root cause of the issue. We apologise for the inconvenience this caused. Regards, Robert Kisteleki RIPE Atlas team