Merge branch '2.7' into 2.8

* 2.7:
  fixed typo
  Revert "fixed typo"
  fixed typo
  fixed CS
  Avoid setting request attributes from signature arguments in AnnotationClassLoader
  [DependencyInjection] Add some missing typehints in YamlFileLoader
  [DependencyInjection] minor: Fix a DocBlock
  [HttpKernel] Give higher priority to adding request formats
  [FrameworkBundle] Fix third level headers for MarkdownDescriptor
  [TwigBundle] do not lose already set method calls
  #20411 fix Yaml parsing for very long quoted strings
  CS: apply is_null
  DX: remove invalid inheritdoc
  bumped Symfony version to 2.7.24
  updated VERSION for 2.7.23
  update CONTRIBUTORS for 2.7.23
  updated CHANGELOG for 2.7.23
  [FrameworkBundle] Skip test if xdebug.file_link_format is defined.

Author: fabpot

Data/Generator/AbstractDataGenerator.php

@@ -42,9 +42,6 @@ public function __construct(GenrbCompiler $compiler, $dirName)
         $this->dirName = $dirName;
     }
 
-    /**
-     * {@inheritdoc}
-     */
     public function generateData(GeneratorConfig $config)
     {
         $filesystem = new Filesystem();

Data/Generator/LocaleDataGenerator.php

@@ -57,9 +57,6 @@ public function __construct($dirName, LanguageDataProvider $languageDataProvider
         $this->regionDataProvider = $regionDataProvider;
     }
 
-    /**
-     * {@inheritdoc}
-     */
     public function generateData(GeneratorConfig $config)
     {
         $filesystem = new Filesystem();