Fix for no more existing values for some locales

Import attribute and option translations from Akeneo (#192)

Fix tests

[HOTFIX] Do not flush any change to attribute config to avoid potenti…

…al MySQL error irreversible

Fix Spec tests (#199)

Fix docu (#194)

Add French, Spanish and German

Accept test webhook (#157)

Require sylius >= 1.12.11 due to product option repository method (#187)

Fix CS