Allow the vcs_acls method to filter for non-eol collection or not via the ``eol`` kwarg
Expose the ``eol`` kwarg of vcs_acls in the internal API
Allow the extras api endpoint for vcs information to include or not eol collections

This is performed by the argument eol which defaults to False but if set will
return vcs information about eol collections.
Add unit-tests for the vcs api endpoint when eol=True
Improve the documentation about the extras endpoints
Show the extras endpoints in the API documentation with a warning to be cautious
Fix english in the api documentation