Melee recipes pack.

1. Lobotomizer + recipe. (
http://www.dcicomp.com/world-war-z-zombies-wiki-76.jpg )
2. Honey scraper recipe.
3. Paint chipper recipe.
4. Paint brush recipe.
5. Baseball bat recipe.
6. Butter knife recipe.
7. Steak knife recipe.
8. Survival knife recipe.
Remove honey scraper recipe.
Change lobotomizer.
Remove butter knife recipe.
Remove baseball bat recipe.
Prevent writing to it_comest data during play.

The item data must only be written when loading it from json, later it is constant and must not be changed.
Remove unused variables.
Remove unused struct items_location_and_chance

along with the file it's in.
Remove unused function inventory::has_artifact_with
Remove unused function is_edible
Move artifact enumerations into enums.h

This allows including only that header and not the artifact.h header.
The artifact header includes the itype.h header, which is thereby included in nearly all source files.
Move enum item_cat enum to enums.h

So inventory.h can use it without including itype.h (it does not need to know what itype is).
Move morale_point::name into player.cpp

Remove the parameter morale_data[], it can be used directly inside of player.cpp
Move Item_factory::nname into item class
Move Item_factory::count_by_charges into item class

Remove the redundant logic in item::count_by_charges, instead use the virtual function of itype.
Move saving artifacts into artifact.cpp

Because the loading is done there, too.
Add item::type_is_defined to check for existing item type

The function is a simple wrapper around Item_factory::has_template().

As it can be used without including item_factory.h, removes including of
item_factory.h from various files.
Remove direct access to itype via item_controller with indirect access via class item.

savegame_json.cpp: the type is already known, it's this->type, established some lines above via make(idtmp).
Move item_category into item.cpp

To avoid the need to include item_factory.h
Move item spawn functions into item_group.h

vehicle.cpp: changed birthday to be 0 instead of current turn, to be consistent with the other item spawn calls.

item_factory.cpp: debug_spawn remains there, to big to be moved.

Also moves the include of "item.h" into the source file.