upgrade to symfony 2.3 and integrate submit type
merged branch alexandresalome/feat-symfony-2.3 (PR #49)

This PR was merged into the master branch.

Discussion
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upgrade to symfony 2.3 and integrate submit type

Commits
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fca1493 upgrade to symfony 2.3 and integrate submit type
Fixed previous merge + fix #44
update to Symfony\Filesystem 2.3