Upgrade notes
Merge branch 'master' of github.com:symfony2admingenerator/AdmingeneratorGeneratorBundle
Update upgrade-notes.md

Upgrade update notes
Update upgrade-notes.md

Upgrade upgrade notes
Pass securityContext in new action
Pass top level object down the nested forms tree to allow form type customization based on object's properties
Update upgrade-notes
Merge branch 'master' into feature-split_views

Conflicts:
	Resources/doc/support-and-contribution/upgrade-notes.md
	Twig/Extension/EchoExtension.php