Skip tests for symfony 2.3
Skip tests for symfony 2.3

Twig 2 and symfony 2.3 are not actually compatible.

osavchenko/SonataAdminBundle,peter-gribanov/SonataAdminBundle,OskarStark/SonataAdminBundle,ejkun/SonataAdminBundle,peter-gribanov/SonataAdminBundle,morfin60/SonataAdminBundle,OskarStark/SonataAdminBundle,osavchenko/SonataAdminBundle,Soullivaneuh/SonataAdminBundle,ARTACK/SonataAdminBundle,dmarkowicz/SonataAdminBundle,dmarkowicz/SonataAdminBundle,ARTACK/SonataAdminBundle,peter-gribanov/SonataAdminBundle,jlamur/SonataAdminBundle,Soullivaneuh/SonataAdminBundle,osavchenko/SonataAdminBundle,Armstrong1992/SonataAdminBundle,jordisala1991/SonataAdminBundle,mweimerskirch/SonataAdminBundle,sonata-project/SonataAdminBundle,mweimerskirch/SonataAdminBundle,dmarkowicz/SonataAdminBundle,ejkun/SonataAdminBundle,ARTACK/SonataAdminBundle,OskarStark/SonataAdminBundle,UnDeleteRU/SonataAdminBundle,jlamur/SonataAdminBundle,dmarkowicz/SonataAdminBundle,UnDeleteRU/SonataAdminBundle,greg0ire/SonataAdminBundle,mweimerskirch/SonataAdminBundle,osavchenko/SonataAdminBundle,ARTACK/SonataAdminBundle,Soullivaneuh/SonataAdminBundle,greg0ire/SonataAdminBundle,sonata-project/SonataAdminBundle,UnDeleteRU/SonataAdminBundle,mweimerskirch/SonataAdminBundle,morfin60/SonataAdminBundle,jlamur/SonataAdminBundle,ossinkine/SonataAdminBundle,Soullivaneuh/SonataAdminBundle,UnDeleteRU/SonataAdminBundle,ejkun/SonataAdminBundle,ossinkine/SonataAdminBundle,jlamur/SonataAdminBundle,jordisala1991/SonataAdminBundle,greg0ire/SonataAdminBundle,osavchenko/SonataAdminBundle,greg0ire/SonataAdminBundle,ejkun/SonataAdminBundle,OskarStark/SonataAdminBundle,UnDeleteRU/SonataAdminBundle,morfin60/SonataAdminBundle,ossinkine/SonataAdminBundle,ossinkine/SonataAdminBundle,Armstrong1992/SonataAdminBundle,peter-gribanov/SonataAdminBundle,jordisala1991/SonataAdminBundle,jordisala1991/SonataAdminBundle,morfin60/SonataAdminBundle,morfin60/SonataAdminBundle,jlamur/SonataAdminBundle,dmarkowicz/SonataAdminBundle,ejkun/SonataAdminBundle