Allow item stacks as input for recipes

* Create the SlotController and refactor it into the various places
  where a crafting grid or crafting output is displayed
* Update the Recipe model to allow each "input" stack to retain the
  count indicated in the data file. This required changing how a few
  other classes interact with it in order for them to get the full
  stack back again for each input (instead of just getting the item
  slug)
* Update the ModVersionParser to allow for full stacks to be given
  as input and refactored common code out for handling input/output/
  tools stacks

src/coffee/controllers/full_recipe_controller.coffee

@@ -30,8 +30,8 @@ module.exports = class FullRecipeController extends BaseController
 
     onDidRender: ->
         @gridController = @addChild CraftingGridController, '.view__crafting_grid',
-            modPack:     @modPack
             imageLoader: @imageLoader
+            modPack:     @modPack
 
         @inputController = @addChild InventoryTableController, '.input .view__inventory_table',
             editable:    false
@@ -72,7 +72,7 @@ module.exports = class FullRecipeController extends BaseController
         inputs.clear()
 
         if @model?
-            for stack in @model.input
+            @model.eachInputStack (stack)->
                 inputs.add stack.itemSlug, stack.quantity