[PromotionBundle] The collection form type uses the new CollectionExtension
[PromotionBundle] Collection type refactoring
[PromotionBundle] Behat fixes
Add cascade to product options field (doctrine mapping)

Change cascade from all to persist
Merge pull request #2247 from steffenbrem/fix-options-persist

[Product][Easy] Add cascade to product options field (doctrine mapping)
Merge pull request #2239 from aRn0D/promotion

[PromotionBundle] The collection form type uses the new CollectionExtension
Sylius i18n
Merge pull request #2101 from gonzalovilaseca/gv-product-translation-prezent

 [WIP] [RFC] Product translation (Prezent)
Remove outdated specs, update composer.lock
Fix and merge search scenarios, run them on travis
Do not access the database during cache clearing
Fix typo in RouteProvider