Merge branch '2.6' into 2.7

* 2.6: (25 commits)
  [2.6] link to https://symfony.com where possible
  Do not override PHP constants, only use when available
  link to https://symfony.com where possible
  [FrameworkBundle] Added missing log in server:run command
  [Finder] Only use GLOB_BRACE when available
  [HttpFoundation] Allow curly braces in trusted host patterns
  Fix merge
  Fix typo in variable name
  [profiler][security] check authenticated user by tokenClass instead of username.
  [WebProfiler] fix html syntax for input types
  [TwigBundle] Fix deprecated use of FlattenException
  [DependencyInjection] Removed extra strtolower calls
  Use https://symfony.com/search for searching
  [Debug] PHP7 compatibility with BaseException
  [Validator] Fixed Choice when an empty array is used in the "choices" option
  Fixed tests
  [StringUtil] Fixed singularification of 'selfies'
  Fix Portuguese (Portugal) translation for Security
  improved exception when missing required component
  [DependencyInjection] resolve circular reference
  ...

Conflicts:
	src/Symfony/Bundle/WebProfilerBundle/Resources/views/Collector/config.html.twig
	src/Symfony/Component/Form/README.md
	src/Symfony/Component/Intl/README.md
	src/Symfony/Component/Security/README.md
	src/Symfony/Component/Translation/README.md
	src/Symfony/Component/Validator/README.md

composer.json

@@ -3,7 +3,7 @@
     "type": "library",
     "description": "Symfony Yaml Component",
     "keywords": [],
-    "homepage": "http://symfony.com",
+    "homepage": "https://symfony.com",
     "license": "MIT",
     "authors": [
         {
@@ -12,7 +12,7 @@
         },
         {
             "name": "Symfony Community",
-            "homepage": "http://symfony.com/contributors"
+            "homepage": "https://symfony.com/contributors"
         }
     ],
     "require": {