Merge branch '2.8' into 3.1

* 2.8:
  Disable CLI color for Windows 10 greater than 10.0.10586
  Exception details break the layout
  [HttpKernel] Remove wrong docblock
  [HttpKernel] Fix HttpCache validation HTTP method
  Move space from the before 'if' to the after 'if'
  [TwigBundle] Add a check for choice's attributes emptiness before calling block('attributes')

Author: nicolas-grekas

DeprecationErrorHandler.php

@@ -195,7 +195,7 @@ private static function hasColorSupport()
     {
         if ('\\' === DIRECTORY_SEPARATOR) {
             return
-                0 >= version_compare('10.0.10586', PHP_WINDOWS_VERSION_MAJOR.'.'.PHP_WINDOWS_VERSION_MINOR.'.'.PHP_WINDOWS_VERSION_BUILD)
+                '10.0.10586' === PHP_WINDOWS_VERSION_MAJOR.'.'.PHP_WINDOWS_VERSION_MINOR.'.'.PHP_WINDOWS_VERSION_BUILD
                 || false !== getenv('ANSICON')
                 || 'ON' === getenv('ConEmuANSI')
                 || 'xterm' === getenv('TERM');