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/controllers/mod_pack_controller.coffee

@@ -33,10 +33,6 @@ module.exports = class ModPackController extends BaseController
 
     # BaseController Overrides #####################################################################
 
-    onWillRender: ->
-        for name in DefaultMods
-            @model.addMod new Mod name:name
-
     onDidRender: ->
         @$table = @$('table')
         @$toolbar = @$('.toolbar')