[session-handler] use session directly to update last usage We don't really need the WebRequest for that. Not using the WebRequest to access the cubicweb repository here will allow a delayed set_session. Related to #2503918

[application/connect] simplify connection logic ``application.connect`` now either sets a full featured ``DBAPISession`` to the ``WebRequest`` object or raises ``AuthenticationError``. The creation and usage of a fake DBAPISession is now handled by ``main_handle_request`` when needed. This means that fake DBAPISession are no longer tracked by the session manager and that user are not given anyway to retrieve them for a later request. This fake DBAPISession is still passed to ``core_handle`` because multiple cubes like registration or forgotten password need this behavior. We would like to get ride of it in the future. This clarification of the connection API greatly simplifies ``DBAPISession`` retrieval//creation process opening the way to improvements in this area. Related to #2503918

Drop hijack user (closes #2901093) Deprecated since 3.17.0. Dropping this function help the session cleanup business.

[sources] drop support for ldapuser source (closes #2936496) The ldapfeed source is a replacement for ldapuser. Use it instead.

merge stable back into default

3.17 is the new stable

Added tag cubicweb-version-3.16.5, cubicweb-debiann-version-3.16.5-1, cubicweb-centos-version-3.16.5-1 for changeset 810a05fba1a4

[pkg] prepare 3.16.5