Temporarily setting all Symfony components to "2.5.x-dev", until the …

…Form Validator issue is in a stable release.

See also: symfony/symfony#11587

composer.json

@@ -27,17 +27,17 @@
         "silex/silex": "1.*",
         "silex/web-profiler": "~1.0",
         "swiftmailer/swiftmailer": "5.*",
-        "symfony/config": "~2.4",
-        "symfony/console": "~2.4",
-        "symfony/filesystem": "~2.4",
-        "symfony/finder": "~2.4",
-        "symfony/form": "~2.4",
-        "symfony/locale": "~2.4",
-        "symfony/translation": "~2.4",
-        "symfony/twig-bridge": "~2.4",
-        "symfony/validator": "~2.4",
-        "symfony/web-profiler-bundle": "~2.4",
-        "symfony/yaml": "~2.4",
+        "symfony/config": "2.5.x-dev",
+        "symfony/console": "2.5.x-dev",
+        "symfony/filesystem": "2.5.x-dev",
+        "symfony/finder": "2.5.x-dev",
+        "symfony/form": "2.5.x-dev",
+        "symfony/locale": "2.5.x-dev",
+        "symfony/translation": "2.5.x-dev",
+        "symfony/twig-bridge": "2.5.x-dev",
+        "symfony/validator": "2.5.x-dev",
+        "symfony/web-profiler-bundle": "2.5.x-dev",
+        "symfony/yaml": "2.5.x-dev",
         "tdammers/htmlmaid": ">=0.5.2",
         "twig/twig": ">=1.8,<2.0-dev",
         "brandonwamboldt/utilphp": "1.0.*"