sonata-project/SonataAdminBundle — pull request #1085 by cram1010 (2012-12-28 17:15:08+00:00)
Title: Update FormProxy:add declaration

FormProxy:add declaration does not follow symfony FormInterface:add declaration.

That causes that when using `sonata_collection_type` the `Add new` button raises an exception (detectable in the javascript console as HTML code) and does nothing.

The pull request fix this.