XWIKI-11167: Change the location of 'Add' menu putting it back to the global menu.

(cherry picked from commit febdd7942d5134d17858d8986af3ad66084b5552)

Conflicts:
	xwiki-platform-core/xwiki-platform-flamingo/xwiki-platform-flamingo-skin/src/main/resources/flamingo/less/forms.less