Merge branch '2.7' into 2.8

* 2.7:
  Php Inspections (EA Ultimate): address some of one-time used local variables
  [Intl] Load locale aliases to support alias fallbacks
  [CssSelector] Fix CSS identifiers parsing - they can start with dash

Author: fabpot

Translation/TwigExtractor.php

@@ -54,8 +54,7 @@ public function __construct(Environment $twig)
      */
     public function extract($resource, MessageCatalogue $catalogue)
     {
-        $files = $this->extractFiles($resource);
-        foreach ($files as $file) {
+        foreach ($this->extractFiles($resource) as $file) {
             try {
                 $this->extractTemplate(file_get_contents($file->getPathname()), $catalogue);
             } catch (Error $e) {