Add to dataset info

Merge branch 'gmu_anlp_fix'

Fix to gmu_anlp

Added gmu_anlp dataset (#424)

Added gmu_anlp dataset

Added normalization to WMT metrics (#423)

Stabilize wmt20 sorting (#422)

Update dataset info for wmt20 metrics (#421)

Normalize WMT 20 metrics (#420)

Add languages for fudan NLP (#419)

Update mlgsum link (#418)

Quarantine broken datasets (#416)

Remove typoed absa_cname (#414)

Remove "pens" dataset from dataset_info (#413)

Fixed inconsistent system orders (#412)