Removed wrong styles on an Admin with Subclasses (#4337)
Removed wrong styles on an Admin with Subclasses (#4337)

There was a wrong markup when using subclasses, li without an ul
Also wrong styles, fixed markup and removed default li styles.
peter-gribanov/SonataAdminBundle,UnDeleteRU/SonataAdminBundle,Armstrong1992/SonataAdminBundle,morfin60/SonataAdminBundle,dmarkowicz/SonataAdminBundle,ejkun/SonataAdminBundle,ejkun/SonataAdminBundle,Soullivaneuh/SonataAdminBundle,morfin60/SonataAdminBundle,mweimerskirch/SonataAdminBundle,greg0ire/SonataAdminBundle,jlamur/SonataAdminBundle,ARTACK/SonataAdminBundle,ARTACK/SonataAdminBundle,morfin60/SonataAdminBundle,ossinkine/SonataAdminBundle,ARTACK/SonataAdminBundle,dmarkowicz/SonataAdminBundle,UnDeleteRU/SonataAdminBundle,osavchenko/SonataAdminBundle,greg0ire/SonataAdminBundle,jlamur/SonataAdminBundle,morfin60/SonataAdminBundle,Armstrong1992/SonataAdminBundle,UnDeleteRU/SonataAdminBundle,Soullivaneuh/SonataAdminBundle,peter-gribanov/SonataAdminBundle,peter-gribanov/SonataAdminBundle,OskarStark/SonataAdminBundle,dmarkowicz/SonataAdminBundle,sonata-project/SonataAdminBundle,OskarStark/SonataAdminBundle,ejkun/SonataAdminBundle,jordisala1991/SonataAdminBundle,jlamur/SonataAdminBundle,osavchenko/SonataAdminBundle,mweimerskirch/SonataAdminBundle,jlamur/SonataAdminBundle,mweimerskirch/SonataAdminBundle,morfin60/SonataAdminBundle,mweimerskirch/SonataAdminBundle,ossinkine/SonataAdminBundle,ARTACK/SonataAdminBundle,Soullivaneuh/SonataAdminBundle,greg0ire/SonataAdminBundle,Soullivaneuh/SonataAdminBundle,OskarStark/SonataAdminBundle,jlamur/SonataAdminBundle,OskarStark/SonataAdminBundle,osavchenko/SonataAdminBundle,UnDeleteRU/SonataAdminBundle,sonata-project/SonataAdminBundle,jordisala1991/SonataAdminBundle,jordisala1991/SonataAdminBundle,peter-gribanov/SonataAdminBundle,ejkun/SonataAdminBundle,osavchenko/SonataAdminBundle,ejkun/SonataAdminBundle,ossinkine/SonataAdminBundle,greg0ire/SonataAdminBundle,jordisala1991/SonataAdminBundle,dmarkowicz/SonataAdminBundle,UnDeleteRU/SonataAdminBundle,ossinkine/SonataAdminBundle,osavchenko/SonataAdminBundle,dmarkowicz/SonataAdminBundle