The API of `Registry` has been modified as follows:
 - `Registry(name)` returns the registry of the given database
 - `Registry.new(name)` forces the creation of a new `Registry` object
 - `Registry.delete(name)` discards the given registry
 - `Registry.delete_all()` discards all registries
 - `registry.setup_signaling()` initializes the signaling for `registry`
 - `registry.check_signaling()` returns an up-to-date `registry`
 - `registry.signal_registry_change()` notifies that `registry` has changed
 - `registry.signal_caches_change()` notifies potential cache invalidation

For now, the base64 image (binary field) is the
content of the image in /static/src/description.png

The kanban view use 'icon' field, and form view use
'icon_image' field. For module having no icon defined
the default image is not the same on kanban or on
form view.

Moreover, it makes more sence to add this dependency.

This commit closes #11796

When installing or upgrating a module via the apps managing view, the
module updates are applied in a new cursor. So when getting the action
to do after updating the module, we need to have a transaction current
with commited transaction.

closes #11216
opw-660269

And jump to the App Switcher automatically on module install/upgrade.
That way, we can remove a lot of ir.actions.todo in the code.