[ADD] <mrp_production_add_middle_stuff_lot>

[IMP] mrp_lot_reserve + mrp_production_add_middle_stuff_lot: group security added
[IMP] Code refactoriced
[IMP] Code change
Merge pull request #451 from Daniel-CA/mrp_production_add_middle_stuff_lot

[ADD] mrp_production_add_middle_stuff_lot