Merge branch '2947-merged-orders-order-by-po' into 'dev_cooperatic'

[REC] for grouped orders display order in list for ordering

See merge request !170
2 jobs from dev_cooperatic in 1 minute 29 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Test
passed #3500
lint:js

00:22

passed #3501
unit:django

01:07