* 2.1: (29 commits)
[DependencyInjection] fixed composer.json
[Validator] Fix typos in validators.ru.xlf
Edited some minor grammar and style errors in russian validation file
Updated Bulgarian translation
[Form] improve error message with a "hasser" hint for PropertyAccessDeniedException
[Form] Updated checks for the ICU version from 4.5+ to 4.7+ due to test failures with ICU 4.6
[Form] simplified a test from previous merge
Update src/Symfony/Component/Form/Extension/Core/Type/FileType.php
fixed CS
Xliff with other node than source or target are ignored
small fix of #5984 when the container param is not set
Filesystem Component mirror symlinked directory fix
[Process][Tests] fixed chainedCommandsOutput tests
fixed CS
Use better default ports in urlRedirectAction
Add tests for urlRedirectAction
info about session namespace
fix upgrade info about locale
Update src/Symfony/Component/DomCrawler/Tests/FormTest.php
Update src/Symfony/Component/DomCrawler/Form.php
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