add test for #11604

Adds a test case for #11604 to avoid regressions. The actual issue
has been fixed in Symfony 2.3 with the merge of #11615.
minor #11707 [Validator] Test that validateProperty() works if no constraint is defined (xabbuh)

This PR was merged into the 2.5 branch.

Discussion
----------

[Validator] Test that validateProperty() works if no constraint is defined

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes (2.3 has to be merged into 2.5 first)
| Fixed tickets | #11604, #11614
| License       | MIT
| Doc PR        |

Adds a test case for #11604 to avoid regressions. The actual issue has been fixed in Symfony 2.3 with the merge of #11615.

Commits
-------

a47a884 add test for #11604
Merge branch '2.5'

* 2.5: (23 commits)
  [HttpKernel] fixed some unit tests for 2.4 (signature now uses SHA256 instead of MD5)
  [HttpKernel] simplified code
  [HttpKernel] fixed internal fragment handling
  fixing yaml indentation
  Unexpexted ));"
  [WebProfiler] replaced the import/export feature from the web interface to a CLI tool
  Forced all fragment uris to be signed, even for ESI
  Add tests and more assertions
  [FrameworkBundle][Translator] Validate locales.
  [HttpFoundation] added some missing tests
  [HttpFoundation] Improve string values in test codes
  [Security] Add more tests for StringUtils::equals
  fix comment: not fourth but sixth argument
  fixing typo in a comment
  [FrameworkBundle] fixed CS
  [FrameworkBundle] PhpExtractor bugfix and improvements
  [Finder] Fix findertest readability
  [Filesystem] Add FTP stream wrapper context option to enable overwrite (override)
  fix parsing of Authorization header
  Test examples from Drupal SA-CORE-2014-003
  ...

Conflicts:
	src/Symfony/Bundle/WebProfilerBundle/Resources/views/Profiler/admin.html.twig
	src/Symfony/Component/Filesystem/Filesystem.php
	src/Symfony/Component/HttpKernel/Fragment/EsiFragmentRenderer.php