GitLab

- forge dependancies are now installed at first, therefore they will not be
  upgraded by the next requirements (no need to upgrade or force installation).
- simply use the zip archive, provided by the forge. No need to install
  hg-evolve.

"has_permission" route predicate was added in previous patch,
in this patch, we reuse most of the route predicate to create
a view predicate.

This will allow to define several views for a single route, but
with different features depending on the user permissions.

For instance, if the user have the right to edit the entity,
we can add a little box with edition options.

pyfilereader was an old alias for SchemaLoader. Let's remove it. (it has been
removed from yams)

test_chmod used to check that permission are 644, but this is not what is done
in the `process_resource` method. This function sets the permissions to the same
as the source file.

As a consequence, depending on your configuration (default umask for instance),
you may end up with the expected 644 permissions or… something else. (666 on our
gitlab-runner for instance).

To make the test consistent with what is done in the function, and consistent
with the initial purpose of this test [0], let's simply check that the
permissions of the source file and the compiled file are the same.

If it appears that this is not enough, a solution could be to enforce 644
permissions in the `process_resource` method, or give the expected permissions
through parameters.

[0]: https://www.cubicweb.org/ticket/17143773

see: https://github.com/mgedmin/check-manifest/issues/115#issuecomment-625096256

related: #1

not when the rset is a number, or a string. It *has* to be an entity.

NQuads need a context to be serialized, opposed to other serializers which do
not. To keep the code simple, let's remove this (this feature has not been
release yet, and removing it should not break anything)

BREAKING CHANGE: nquad serialization is removed (but… I guess it has never
worked)

new rdf views have been added in 50122959acbc, but the test has been unchanged.
Let's fix that.

already install on the base image

plpython has never been used in cubicweb. Moreover, it prevents
the upgrade to postgresql 12. In consequence, as of now importing
plpython is the responsability of each cube.

closes #17277267

co-authors:
    - Guillaume Vandevelde
    - Katia Saurfelt
    - Noé Gaumont
    - Simon Chabot