Use Twig directly in sonata-project bundles without proxy classes, Stage 2

[covex-nn]

Stage 2 goes after Stage 1, all changes must be pushed to master branch of each repository, because this is BC breaks.

There are 15 bundles, where were changes during Stage 1 and where Sonata\BlockBundle\Templating\TwigEngine is used now instead of Symfony\Bundle\TwigBundle\TwigEngine:

• BlockBundle
• AdminBundle
• SeoBundle
• PageBundle
• DoctrineORMAdminBundle
• DoctrinePhpcrAdminBundle
• FormatterBundle
• MediaBundle
• UserBundle
• NewsBundle
• ArticleBundle
• TranslationBundle
• TimelineBundle
• CommentBundle
• DashboardBundle

BlockBundle must be updated in accordance with the plan or close to it.

For other bundles we should search for EngineInterface in src directory, change type hint to Twig\Environment and update tests. Also we should search for templating service in docs directory and change it to twig.

[covex-nn]

Update (remove?) sonata-project/block-bundle version inside "conflict" section of composer.json

• UserBundle
• SeoBundle
• MediaBundle
• CommentBundle
• ArticleBundle
• NewsBundle
• DoctrineORMAdminBundle

See #380 (comment)