Add require translation

Author: Tri Pham

composer.json

@@ -27,6 +27,7 @@
         "symfony/framework-bundle": "^2.8 || ^3.0 || ^4.0",
         "symfony/security-bundle": "^2.8 || ^3.0 || ^4.0",
         "symfony/templating": "^2.8 || ^3.0 || ^4.0",
+        "symfony/translation": "^2.8 || ^3.0 || ^4.0",
         "symfony/twig-bundle": "^2.8 || ^3.0 || ^4.0",
         "symfony/validator": "^2.8 || ^3.0 || ^4.0",
         "twig/twig": "^1.28 || ^2.0"