[hooks] base64-encode extid before inserting it into moved_entities
If we insert the wrong value we're never going to find these entities
again... Closes #5741105.
Additional services
===================
In this chapter, we introduce services crossing the *web -
repository - administration* organisation of the first parts of the
CubicWeb book. Those services can be either proper services (like the
undo functionality) or mere *topical cross-sections* across CubicWeb.
.. toctree::
:maxdepth: 2
undo