Merge branch 'beta' into 'master'

Bugs mineurs, documentation

See merge request !162
5 jobs for master in 9 minutes and 42 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Test
passed #15267
py37-django22

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94.0%
passed #15268
py38-django22

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94.0%
passed #15269
py39-django22

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94.0%
 
  Quality Assurance
passed #15270
linters

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  Docs
passed #15271
documentation

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