Add nascent version of the mod detail page

* Create a nascent version of the mod detail page
* Make the slug mandatory for Mod instead of name, and load the name
  from the data file
* Make the Feedback view universal on all pages
* Refactor the use of mod pack to have a single global object at the
  router level which is shared between pages. Further, make this one
  object load itself immediately and have it automatically load any
  activated mod version
* Refactor the use of Storage related to mod pack versions into the
  router as well.
* Add trace logging back in for events, but allow individual classes
  to suppress it (as opposed to actually supressing the events)
* Fix a bug in ModVersion.eachItem where it would suggest so-called
  items which are merely registered slugs without associated items

src/scripts/models/item.coffee

@@ -19,6 +19,7 @@ module.exports = class Item extends BaseModel
 
         attributes.isGatherable ?= false
         attributes.slug         ?= _.slugify attributes.name
+        options.logEvents       ?= false
         super attributes, options
 
         @_recipes = []
@@ -57,7 +58,7 @@ module.exports = class Item extends BaseModel
         if _.slugify(@name) isnt @slug
             result.push ', slug:'; result.push @slug
 
-        if @recipes.length > 0
+        if @_recipes.length > 0
             result.push ', recipes:«'
             result.push @_recipes.length
             result.push ' items»'