Merge branch '2.7' into 2.8

* 2.7:
  [2.3][Component/Security] Fixed phpdoc in AnonymousToken constructor for user param
  prevent calling get() for service_container service
  call get() after the container was compiled
  Fixed readme of OptionsResolver
  [DependencyInjection] Suggest ExpressionLanguage in composer.json

Author: fabpot

Tests/DependencyInjection/WebProfilerExtensionTest.php

@@ -100,6 +100,8 @@ public function testToolbarConfig($toolbarEnabled, $interceptRedirects, $listene
             $this->assertSame($listenerEnabled, $this->container->get('web_profiler.debug_toolbar')->isEnabled());
         }
 
+        $this->assertSame($enabled, $this->container->get('web_profiler.debug_toolbar')->isEnabled());
+
         $this->assertSaneContainer($this->getDumpedContainer());
     }