use subitems for backend product grid
use subitems for backend product grid


Former-commit-id: 2ba3c1138ee3d9c6e516ace90831d0fd559d11cc
Jedisjeux/Jedisjeux,loic425/Jedisjeux,loic425/Jedisjeux,loic425/Jedisjeux,Jedisjeux/Jedisjeux,loic425/Jedisjeux,Jedisjeux/Jedisjeux,loic425/Jedisjeux,Jedisjeux/Jedisjeux