cubicweb #2286215 Loading configuration crash on denied chmod [validation pending]

WebConfiguration.load_configuration call CubicWebConfiguration.check_writeable_uid_directory.

  1. This method is not only about checking. It is also about fixing but trying to chmod stuff.
  2. A method called load_configuration should be strictly passive.
  3. This append in simple read onyl cubicweb shell that does not care a bit about those directory.
priorityimportant
typebug
done in3.15.2
load0.100
load left0.000
closed by#4c1efb5bde0a [config] load_configuration should not crash because of fs errors. Closes #2286215