fix for customizable foods

names - no more meat, meat and egg sandwich sandwich sandwich type names
- this would now be an egg and double meat triple decker sandwich

commented sandwich.dm out. was almost duplicate code, but if a sandwich
was being made with a shard or customizable food, it was making it a
different object (/food/snacks/csandwich instead of
food/snacks/customizable/sandwich), only thing it processed that the
other didn't was if there was a shard in the food, which is now dealt
with in customizable

Would have deleted sandwich.dm, but for some reason my dmi adds a load of files and changes the path for detective to Detective when I compile, so trying to avoid including it in PR's where possible