[repoapi] drop get_option_value's foreid argument
repoapi was introduced in 3.19, so no need to introduce legacy
deprecated stuff at the same time.
Add some entities
-----------------
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.