[uicfg] uicfg.py moves from web/ to web/views/ (prepares #2406609) We are about to make uicfg selectable. Registrable / selectable views and helpers live in web/views. Hence the move. Backward compat is put in place. However CubicWeb imports of uicfg are updated to the new location.

Add some entities
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As manager, you can access to entity creation forms by using the `site management`_ page.

.. _`site management`: manage

As regular user, the index page or the action box may propose some links to create entities according to the context.