Merge branch '5.4' into 6.0

* 5.4:
  [HttpClient] fix
  [HttpClient] Handle requests with null body
  [WebProfilerBundle] Log section minor fixes (missing "notice" filter, log priority, accessibility)
  Fix link not present

Author: nicolas-grekas

DataCollector/LoggerDataCollector.php

@@ -133,6 +133,7 @@ public function getFilters()
             'priority' => [
                 'Debug' => 100,
                 'Info' => 200,
+                'Notice' => 250,
                 'Warning' => 300,
                 'Error' => 400,
                 'Critical' => 500,