Merge branch '3.4' into 4.4

* 3.4:
  [Translation] added missing Albanian translations
  [Form, Security, Validator] Add missing Turkish translations (tr)
  Display php info for extra versions in travis
  38737 add missing dutch translation
  [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

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()