Allow new item description files to be created

src/coffee/controllers/item_page_controller.coffee

@@ -148,7 +148,11 @@ module.exports = class ItemPageController extends PageController
         @client.fetchFile path:GitHub.file.itemDescription modSlug:@_itemSlug.mod, itemSlug:@_itemSlug.item
             .then (response)=>
                 @_editingFile = response.json.data
-                @model.item.parse @_editingFile.content
+                if @_editingFile.content.length > 0
+                    @model.item.parse @_editingFile.content
+                else
+                    @model.item.description = ''
+
                 @_descriptionController.model = @model.item.description
 
     _endEditingDescription: ->
@@ -180,6 +184,8 @@ module.exports = class ItemPageController extends PageController
         if @model.item?.description?.length > 0
             @_descriptionController.model = @model.item.description
             @show @$descriptionSection
+        else if @user?
+            @show @$descriptionSection
         else
             @hide @$descriptionSection