Revises client side code for mcmapgen.
Adds crafting/smelting recipes. This is the mcra Go code, ported
to javascript.
Deletes go code from top-level mcra package. It has no more use
to us.
Renames data/template/script.js to data.js
Revises bindata.go to include new files.
Fixes ids for Compound items.
They should be 32 bits, instead of 16 bits to prevent
collisions with existing items.
Moves mcmapgen code into top-level mcra directory.
Delete testdata.