Fixed Form Provider documentation
minor #1043 Fixed Form Provider documentation (WouterJ)

This PR was submitted for the master branch but it was merged into the 1.2 branch instead (closes #1043).

Discussion
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Fixed Form Provider documentation

The Locale component is replaced by the Intl and Icu components, which are taken care of by Composer.

The twig bridge also does not work without translation, as far as I tested.

Commits
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dddd0aa Fixed Form Provider documentation