Complete the Crafting Table view/controller

* Add output box to the crafting table view
* Add remaining crafting patterns to all MC 1.7.10 recipes
* Add all crafting patterns to Buildcraft 6.2.6
* Disable mods which don't have patterns yet
* Add the Url constants for computing urls from templates
* Add the `findItemDisplay` to ModPack (along with tests) and remove
  all replace all uses of `getPathSlugs` with it

src/scripts/models/item.coffee

@@ -25,8 +25,6 @@ module.exports = class Item extends BaseModel
 
     Object.defineProperty @prototype, 'isCraftable', get:-> @recipes.length > 0
 
-    Object.defineProperty @prototype, 'pathSlugs', get:-> @getPathSlugs()
-
     # Public Methods ###############################################################################
 
     addRecipe: (recipe)->
@@ -40,9 +38,6 @@ module.exports = class Item extends BaseModel
             return if this.name < that.name then -1 else +1
         return 0
 
-    getPathSlugs: ->
-        return modSlug:@modVersion.slug, itemSlug:@slug
-
     # Object Overrides #############################################################################
 
     toString: ->