Merge branch '2.3' into 2.7

* 2.3:
  PhpUnitNoDedicateAssertFixer results
  Improve Norwegian translations
  Simplify markdown for PR template

Conflicts:
	src/Symfony/Bridge/Propel1/Tests/Form/DataTransformer/CollectionToArrayTransformerTest.php
	src/Symfony/Component/Security/Tests/Core/SecurityContextTest.php

Author: nicolas-grekas

Resources/translations/validators.no.xlf

@@ -8,7 +8,7 @@
             </trans-unit>
             <trans-unit id="29">
                 <source>The uploaded file was too large. Please try to upload a smaller file.</source>
-                <target>Den opplastede file var for stor. Vennligst last opp en mindre fil.</target>
+                <target>Den opplastede filen var for stor. Vennligst last opp en mindre fil.</target>
             </trans-unit>
             <trans-unit id="30">
                 <source>The CSRF token is invalid.</source>