add missing dependencies in composer.json file

composer.json

@@ -26,12 +26,13 @@
         "symfony/console": "~2.3",
         "symfony/twig-bridge": "~2.3",
         "symfony/class-loader":"~2.3",
+        "symfony/expression-language": "~2.4",
         "sensio/generator-bundle": "~2.3",
         "twig/twig": "~1.15",
         "twig/extensions": "~1.0",
         "sonata-project/exporter": "~1.0",
-        "sonata-project/block-bundle": "~2.2,>=2.2.7",
-        "sonata-project/core-bundle": "~2.2",
+        "sonata-project/block-bundle": "~2.2,>=2.2.7,<2.3",
+        "sonata-project/core-bundle": "~2.2,<2.3.1",
         "doctrine/common": "~2.2",
         "knplabs/knp-menu-bundle": ">=1.1.0,<3.0.0",
         "knplabs/knp-menu": ">=1.1.0,<3.0.0"