added disqus gem
added disqus forum partial to render view, rendered view on lessonshowhtml, and added necessary application.yml files which will not show up, look at readme file that will be updated
changed ENV variable name
updated forum.html to render partial and added language for SSO in partial
changed forumcontroller to interact with SSO, updated forum.html to show disqus name iwthout signing in
deleted forum stylesheet
remote MOOT CDN references in _head partial
updated readme- lines 48-59
delete spec for rspec test
Merge branch 'disqus_sso_and_lessons' of https://github.com/dominathan/theodinproject into dominathan-disqus_sso_and_lessons
add SSO to single-lesson comments if user logged in
add check for env variables
clean up forum section and add specs
style tweaks for forum
tweak forum styles