Added feature and steps for Disqus
Added Disqus account settings to initializers/disqus.rb
Added show view and specs for Documents and Articles
refactored disqus_embed into a partial
adjusted show views and specs for documents and articles
refactored features and steps
refactored show views and specs
changed directory structure for partials and initializer
moved inline js into a file
Merge pull request #426 from YaroSpace/disqus

Adding Disqus commenting engine