Fix BC break after split of ACL from core

composer.json

@@ -19,7 +19,8 @@
         "php": ">=5.3.9",
         "doctrine/common": "~2.3",
         "twig/twig": "~1.20|~2.0",
-        "psr/log": "~1.0"
+        "psr/log": "~1.0",
+        "symfony/security-acl": "~2.8"
     },
     "replace": {
         "symfony/asset": "self.version",
@@ -75,8 +76,7 @@
         "monolog/monolog": "~1.11",
         "ircmaxell/password-compat": "~1.0",
         "ocramius/proxy-manager": "~0.4|~1.0",
-        "egulias/email-validator": "~1.2",
-        "symfony/security-acl": "~2.8"
+        "egulias/email-validator": "~1.2"
     },
     "autoload": {
         "psr-4": {