Merge branch '3.0'

* 3.0:
  [DependencyInjection] fix dumped YAML snytax
  Remove InputOption::VALUE_REQUIRED mode from $default parameter description as InputOption::setDefault() throws an exception only when called in InputOption::VALUE_NONE mode. In practice the $default value could still be accessed in InputOption::VALUE_REQUIRED mode in case InputOption was never set but accessed from InputDefinition::getOption() method
  [Yaml] always restore the error handler in tests
  [FrameworkBundle] fix YAML syntax
  fix YAML syntax in functional tests config
  [HttpFoundation] [Session] Removed unnecessary PHP version check as minimum requirement is now 5.5.9
  [Form] Fixed violation mapping if multiple forms are using the same (or part of the same) property path
  fix FQCN in tests added by #17694
  Fix locale and written standard inconsistencies for Norwegian translations
  [Form] [Validator] Fix locale inconsistencies in Norwegian translations
  [TwigBridge] Symfony 3.1 forward compatibility
  fixed CS
  [DependencyInjection] fixed exceptions thrown by get method of ContainerBuilder
  [Yaml] properly parse lists in object maps
  [FrameworkBundle] Remove unused private method.
  [Form] remove useless code in ResizeFormListener
  [Config] Fix EnumNodeDefinition to allow building enum nodes with one element
  [Form] remove deprecated empty_value_in_choices
  fix choice_value option in EntityType and add some tests

Author: xabbuh

Console/Descriptor/TextDescriptor.php

@@ -411,17 +411,6 @@ private function formatRouterConfig(array $config)
         return trim($configAsString);
     }
 
-    /**
-     * @param string $section
-     * @param string $message
-     *
-     * @return string
-     */
-    private function formatSection($section, $message)
-    {
-        return sprintf('<info>[%s]</info> %s', $section, $message);
-    }
-
     /**
      * @param callable $callable
      *

Tests/DependencyInjection/Fixtures/yml/assets.yml

@@ -1,7 +1,7 @@
 framework:
     assets:
         version: SomeVersionScheme
-        version_format: %%s?version=%%s
+        version_format: '%%s?version=%%s'
         base_urls: http://cdn.example.com
         packages:
             images_path:
@@ -11,7 +11,7 @@ framework:
                 base_urls: ["http://images1.example.com", "http://images2.example.com"]
             foo:
                 version: 1.0.0
-                version_format: %%s-%%s
+                version_format: '%%s-%%s'
             bar:
                 base_urls: ["https://bar2.example.com"]
             bar_version_strategy:

Tests/DependencyInjection/Fixtures/yml/full.yml

@@ -13,7 +13,7 @@ framework:
         only_exceptions: true
         enabled: false
     router:
-        resource:     %kernel.root_dir%/config/routing.xml
+        resource:     '%kernel.root_dir%/config/routing.xml'
         type:         xml
     session:
         storage_id:      session.storage.native
@@ -48,7 +48,7 @@ framework:
     annotations:
         cache:   file
         debug:   true
-        file_cache_dir: %kernel.cache_dir%/annotations
+        file_cache_dir: '%kernel.cache_dir%/annotations'
     serializer:
          enabled:        true
          enable_annotations: true