[warnings] explicitly ask to show DeprecationWarning in debug mode (closes #1942760)
as python 2.7 don't show DeprecationWarning by default
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.