Namespace (#1328)

* CSS to SCSS

* Use sprockets

* Use Sprockets helpers

* Fix gollum.editor.js error when changing language

* Add keybinding files required by ace and some ace ext files that are required or might be useful.

* Move app paths to /gollum namespace, add route helpers for view templates

* Use path helper for links in page view

* Use path helper methods in javascript assets

* Refactored sprockets helpers for mustache

* Remove debugging

lib/gollum/views/layout.rb

@@ -6,6 +6,8 @@ module Precious
       include Rack::Utils
       include Sprockets::Helpers
       include Precious::Views::SprocketsHelpers
+      include Precious::Views::RouteHelpers
+      
       alias_method :h, :escape_html
 
       attr_reader :name, :path