Merge branch '3.1'

* 3.1:
  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
  [FrameworkBundle] Fix default lifetime of cache pools
  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

ExceptionHandler.php

@@ -295,6 +295,7 @@ public function getStylesheet(FlattenException $exception)
                 border-bottom:1px solid #ccc;
                 border-right:1px solid #ccc;
                 border-left:1px solid #ccc;
+                word-wrap: break-word;
             }
             .sf-reset .block_exception { background-color:#ddd; color: #333; padding:20px;
                 border-top-left-radius: 16px;