Refactor app.rb to use paged.

Create new pages relative to current directory.

lib/gollum/frontend/views/page.rb

@@ -7,6 +7,10 @@ module Precious
       DATE_FORMAT = "%Y-%m-%d %H:%M:%S"
       DEFAULT_AUTHOR = 'you'
 
+      def new_page_data_variables
+        %{ data-path="#{@path}"} if @path
+      end
+
       def title
         @page.url_path.gsub("-", " ")
       end