(usabilidad y validaciones generales)
Depende de Sonata Admin Bundle:
sigan el link para ver la instalacion
http://sonata-project.org/bundles/admin/master/doc/reference/installation.html
y tambien depende de FOSUserBundle:
Add the following lines in your deps file:
[FOSUserBundle]
git=git://github.com/FriendsOfSymfony/FOSUserBundle.git
target=bundles/FOS/UserBundle
If you prefer instead to use git submodules, then run the following:
$ git submodule add git://github.com/FriendsOfSymfony/FOSUserBundle.git vendor/bundles/FOS/UserBundle
$ git submodule update --init