self to static (#5172)
self to static (#5172)

allow using overwritten constant for the mosaic html classes inside of admin class
osavchenko/SonataAdminBundle,OskarStark/SonataAdminBundle,osavchenko/SonataAdminBundle,OskarStark/SonataAdminBundle,jordisala1991/SonataAdminBundle,osavchenko/SonataAdminBundle,jordisala1991/SonataAdminBundle,sonata-project/SonataAdminBundle,mweimerskirch/SonataAdminBundle,mweimerskirch/SonataAdminBundle,ARTACK/SonataAdminBundle,ARTACK/SonataAdminBundle,Armstrong1992/SonataAdminBundle,mweimerskirch/SonataAdminBundle,greg0ire/SonataAdminBundle,Armstrong1992/SonataAdminBundle,ARTACK/SonataAdminBundle,greg0ire/SonataAdminBundle,greg0ire/SonataAdminBundle,ARTACK/SonataAdminBundle,OskarStark/SonataAdminBundle,osavchenko/SonataAdminBundle,peter-gribanov/SonataAdminBundle,greg0ire/SonataAdminBundle,peter-gribanov/SonataAdminBundle,OskarStark/SonataAdminBundle,mweimerskirch/SonataAdminBundle,sonata-project/SonataAdminBundle,osavchenko/SonataAdminBundle,peter-gribanov/SonataAdminBundle,jordisala1991/SonataAdminBundle,jordisala1991/SonataAdminBundle,peter-gribanov/SonataAdminBundle