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

Gemfile

@@ -1,3 +1,5 @@
+source 'https://rubygems.org'
+
 if RUBY_PLATFORM == 'java'
   gem 'gollum-rjgit_adapter', :git => 'https://github.com/repotag/gollum-lib_rjgit_adapter' # For development purposes
   gem 'warbler'
@@ -7,6 +9,5 @@ end
 
 gem 'gollum-lib', :git => 'https://github.com/gollum/gollum-lib.git', :branch => 'gollum-lib-5.x' # For development purposes
 
-source 'https://rubygems.org'
 gemspec
-gem 'rake', '~> 11.2'
+gem 'rake', '~> 11.2'