Merge branch '2.3' into 2.7

* 2.3:
  Documentation link changed
  allow semantic twig extension versions
  orm 2.2 and 2.3 are end of life
  Update ORM requirements to allow DBAL 2.5 again

Author: fabpot

composer.json

@@ -9,14 +9,13 @@
     "require": {
         "php": ">=5.3.9",
         "symfony/symfony": "2.7.*",
-        "doctrine/orm": "~2.2,>=2.2.3,<2.5",
-        "doctrine/dbal": "<2.5",
+        "doctrine/orm": "^2.4.8",
         "doctrine/doctrine-bundle": "~1.4",
         "symfony/assetic-bundle": "~2.3",
         "symfony/swiftmailer-bundle": "~2.3",
         "symfony/monolog-bundle": "~2.4",
         "sensio/distribution-bundle": "~4.0",
-        "sensio/framework-extra-bundle": "~3.0,>=3.0.2",
+        "sensio/framework-extra-bundle": "^3.0.2",
         "incenteev/composer-parameter-handler": "~2.0"
     },
     "require-dev": {

web/app_dev.php

@@ -4,7 +4,8 @@
 use Symfony\Component\Debug\Debug;
 
 // If you don't want to setup permissions the proper way, just uncomment the following PHP line
-// read http://symfony.com/doc/current/book/installation.html#configuration-and-setup for more information
+// read http://symfony.com/doc/current/book/installation.html#checking-symfony-application-configuration-and-setup
+// for more information
 //umask(0000);
 
 // This check prevents access to debug front controllers that are deployed by accident to production servers.