Regression tasks plot flows with highest error

[LaurensKrudde]

The analysis on tasks orders flows on the highest score (whichever measure). This makes sense for accuracy, precision, etc. But not for error measures. Regression tasks now order the flows based on which has the highest error.

Proposal: for certain evaluation measures, the ordering of flows should be reversed.

(task 2295)

[joaquinvanschoren]

Thanks! Will do!