Merge branch '4.4' into 5.1

* 4.4:
  [DI] Fix Preloader exception when preloading a class with an unknown parent/interface
  [Translation] added missing Albanian translations
  [Form, Security, Validator] Add missing Turkish translations (tr)
  Display php info for extra versions in travis
  [ProxyManager] use "composer/package-versions-deprecated" instead of "ocramius/package-versions"
  38737 add missing dutch translation
  Fix transient tests
  [Validator] Add missing Slovak translations.
  [Form, Security, Validator] Add missing Persian translations (fa_IR)
  [Form] Fix wrong translations for Ukrainian (uk)
  [Validator] Add missing translations for Ukrainian (uk)
  [Security] Add missing translations for Ukrainian (uk)
  [Form] Add missing translations for Ukrainian (uk)
  [Security] Add missing Slovak translations.
  [Form] Added missing Spanish translations.
  Fix transient tests

Author: nicolas-grekas

Tests/HttpCache/ResponseCacheStrategyTest.php

@@ -216,7 +216,7 @@ public function testResponseIsExiprableWhenEmbeddedResponseCombinesExpiryAndVali
         $cacheStrategy->add($embeddedResponse);
         $cacheStrategy->update($masterResponse);
 
-        $this->assertSame('60', $masterResponse->headers->getCacheControlDirective('s-maxage'));
+        $this->assertEqualsWithDelta(60, (int) $masterResponse->headers->getCacheControlDirective('s-maxage'), 1);
     }
 
     public function testResponseIsExpirableButNotValidateableWhenMasterResponseCombinesExpirationAndValidation()