[dataimport] Have ucsvreader's API match that of csv.reader (closes #3705701)
'separator' and 'quote' are replaced with 'delimiter' and 'quotechar'.
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.