[2.3] CS Fixes
minor #13054 [2.3] CS Fixes (GrahamCampbell)

This PR was squashed before being merged into the 2.3 branch (closes #13054).

Discussion
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[2.3] CS Fixes

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | N/A
| License       | MIT
| Doc PR        | N/A

##### This pull request provides some cs fixes.

Commits
-------

b521c20 [2.3] CS Fixes
[2.3] CS And DocBlock Fixes
Merge branch '2.3' into 2.5

* 2.3:
  [2.3] CS And DocBlock Fixes
  [2.3] CS Fixes

Conflicts:
	src/Symfony/Bridge/Doctrine/Security/RememberMe/DoctrineTokenProvider.php
	src/Symfony/Bundle/FrameworkBundle/Command/ContainerDebugCommand.php
	src/Symfony/Bundle/FrameworkBundle/Command/RouterDebugCommand.php
	src/Symfony/Bundle/FrameworkBundle/EventListener/TestSessionListener.php
	src/Symfony/Component/Config/Definition/ReferenceDumper.php
	src/Symfony/Component/Console/Application.php
	src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
	src/Symfony/Component/Filesystem/Tests/FilesystemTest.php
	src/Symfony/Component/Form/Extension/Csrf/EventListener/CsrfValidationListener.php
	src/Symfony/Component/Form/FormError.php
	src/Symfony/Component/HttpFoundation/Request.php
	src/Symfony/Component/HttpFoundation/Response.php
	src/Symfony/Component/HttpKernel/Debug/TraceableEventDispatcher.php
	src/Symfony/Component/Process/ProcessUtils.php
	src/Symfony/Component/PropertyAccess/PropertyAccessor.php
	src/Symfony/Component/PropertyAccess/PropertyAccessorInterface.php
	src/Symfony/Component/Serializer/Encoder/XmlEncoder.php
	src/Symfony/Component/Validator/Constraints/CardSchemeValidator.php
	src/Symfony/Component/Validator/Constraints/GroupSequence.php
	src/Symfony/Component/Validator/Mapping/ClassMetadata.php
	src/Symfony/Component/Validator/Mapping/ClassMetadataFactory.php
	src/Symfony/Component/Validator/Mapping/MemberMetadata.php
	src/Symfony/Component/Validator/Tests/Fixtures/StubGlobalExecutionContext.php