Used internationalised strings for level not found message

app/lib/LevelLoader.coffee

@@ -93,9 +93,6 @@ module.exports = class LevelLoader extends CocoClass
     @supermodel.populateModel @level
 
   onSupermodelError: ->
-    # msg = $.i18n.t('play_level.level_load_error',
-    #   defaultValue: "Level could not be loaded.")
-    # $('body').append('<div class="alert">' + msg + '</div>')
 
   onSupermodelLoadedOne: (e) ->
     @update()

app/templates/play.jade

@@ -4,7 +4,7 @@ block content
 
   if notFound
     div(class="alert alert-warning") 
-      h2 Oops, the level "#{notFound}" was not found!
+      h2 #{notFoundMessage}
 
   h1(data-i18n="play.choose_your_level") Choose Your Level
   p

app/views/play/level_view.coffee

@@ -98,8 +98,6 @@ module.exports = class PlayLevelView extends View
 
   onLevelLoadError: (e) =>
     application.router.navigate "/play?not_found=#{@levelID}", {trigger: true}
-    # msg = $.i18n.t('play_level.level_load_error', defaultValue: "Level could not be loaded.")
-    # @$el.html('<div class="alert"><h2>Whoops we were not able to find ' + @levelID + '!</h2><p>' + msg + '</p><p>Please select a valid level from the <a href="/play">levels</a> page.</p></div>')
 
   setLevel: (@level, @supermodel) ->
     @god?.level = @level.serialize @supermodel

app/views/play_view.coffee

@@ -9,6 +9,7 @@ module.exports = class PlayView extends View
     context = super(context)
     context.home = true
     context.notFound = @getQueryVariable 'not_found'
+    context.notFoundMessage = $.i18n.t('play_level.level_load_error') + context.notFound
     tutorials = [
       {
         name: 'Rescue Mission'