Fix #1568 : Scheduler timeouts
Fix typo
Update to symfony 2.3.7
Fix #1586 : jQuery UI error in thesaurus tab selection
Merge pull request #798 from romainneutron/fix-1586

[3.8] Fix #1586 : jQuery UI error in thesaurus tab selection
Merge pull request #797 from romainneutron/symfony-2.3.7

[3.8] Update to symfony 2.3.7
Bump to version 3.8.3-alpha.0
Merge branch '3.8'

Conflicts:
	composer.json
	composer.lock
	lib/Alchemy/Phrasea/Controller/Admin/TaskManager.php
	lib/Alchemy/Phrasea/Core/Version.php