Merge branch '4.4' into 5.0

* 4.4:
  fix unix root dir issue
  sync validator translation files with master
  [HttpFoundation] fix not sending Content-Type header for 204 responses
  [ErrorHandler] silence warning when zend.assertions=-1
  fix anchor
  [Console] Handle zero row count in appendRow() for Table
  fix links to releases page (formerly known as "roadmap")
  [Console] Don't load same-namespace alternatives on exact match found

Author: fabpot

Debug.php

@@ -29,7 +29,7 @@ public static function enable(): ErrorHandler
             ini_set('display_errors', 1);
         }
 
-        ini_set('zend.assertions', 1);
+        @ini_set('zend.assertions', 1);
         ini_set('assert.active', 1);
         ini_set('assert.warning', 0);
         ini_set('assert.exception', 1);