Update markdown parsing to allow wiki links

Any link inside a item detail page's markdown description which does
not have a URL will be assumed to be the name of an item covered by
Crafting Guide and an URL will be added to reference the appropiate
browse page.

src/coffee/controllers/item_page_controller.coffee

@@ -113,7 +113,7 @@ module.exports = class ItemPageController extends PageController
         return _.extend super,
             'click a.craftingPlan': 'routeLinkClick'
             'click .byline a':      'routeLinkClick'
-            'click .markdown':      'routeLinkClick'
+            'click .markdown a':    'routeLinkClick'
             'click button':         'craftingPlanButtonClicked'
 
     # Private Methods ##############################################################################
@@ -132,9 +132,9 @@ module.exports = class ItemPageController extends PageController
         description = @model.compileDescription()
         if description?
             @$descriptionPanel.html description
-            @show @$descriptionPanel
+            @show @$descriptionSection
         else
-            @hide @$descriptionPanel
+            @hide @$descriptionSection
 
     _refreshRecipes: ->
         @_recipeControllers ?= []