cubicweb-vcsfile #1749093 c-c vcscheck should delete erroneous revision/files/contents [resolved]

so w e ensure once ran, everything is ok

prioritynormal
typebug
done in1.8.3
load0.500
load left0.000
closed by#c8ba1626ab18 more enhancements of vcscheck: remove unknown/inconsistent files, revisions and version contents. Closes #1749093