Merge branch '3.4' into 4.3

* 3.4:
  cs fix
  Partially Revert "Remove trailing space in all markdown files"
  [Intl] Explicit check
  Fix getMaxFilesize() returning zero
  [DI] fix docblocks in Container*
  Fixed markdown file
  [TwigBridge] Replaced plain doc block copies with inheritdoc.
  [Intl] Cleanup unused language aliases entry

Author: nicolas-grekas

README.md

@@ -6,7 +6,7 @@ A Ldap client for PHP on top of PHP's ldap extension.
 Disclaimer
 ----------
 
-This component is only stable since Symfony 3.1. Earlier versions 
+This component is only stable since Symfony 3.1. Earlier versions
 have been marked as internal as they still needed some work.
 Breaking changes were introduced in Symfony 3.1, so code relying on
 previous version of the component will break with this version.