Update ORM requirements to allow DBAL 2.5 again

Author: Tobion

composer.json

@@ -9,8 +9,7 @@
     "require": {
         "php": ">=5.3.3",
         "symfony/symfony": "2.3.*",
-        "doctrine/orm": "~2.2,>=2.2.3,<2.5",
-        "doctrine/dbal": "<2.5",
+        "doctrine/orm": "~2.2.3||~2.3.0||~2.4.8||~2.5",
         "doctrine/doctrine-bundle": "~1.2",
         "twig/extensions": "1.0.*",
         "symfony/assetic-bundle": "~2.3",