Tutorial, Bug Fix, Crafting Changes

1) Started work on instanced tutorial areas for each new player. (Gave
the dmm_reader a big update, now it can load maps to an offset, not just
the south west corner of the map).

2) Removed the work around for the icon offset bug in web clients. This
has been fixed by a BYOND software update.

3) Changed the crafting system. Auto-crafting removed. Now you must
click a button to craft. Filler tiles removed. Crafted items attempt to
go into inventory before the crafting hotbar.