Merge branch '308-constaint-in-install' into 'django'

The 2 constraints identified placed in the README file.

Closes #308

See merge request !166
3 jobs for WIP_22-manage-groups-perm in 3 minutes and 53 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Build
passed #414796
allgo
bootstrap

00:03:21

 
  Test
failed #414797
allowed to fail
django_pylint

00:00:29

 
  Cleanning
passed #414798
nettoyage

00:00:02

 
Name Stage Failure
failed
django_pylint Test
+-------------------------------+------------+



Global evaluation
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Your code has been rated at 4.86/10

ERROR: Job failed: exit status 1