cubicweb #15229018 sdist is incomplete [validation pending]

in particular:

  • many test data files are missing
  • part of documentation files is missing
prioritynormal
typebug
done in3.24.0
load left0.000
closed by#3522d2a3389e [pkg] Add missing entries to MANIFEST.in
patch[pkg] Add missing entries to MANIFEST.in [applied]