Comment and favorites controller specs and email permission migration
Added favorites model
Corrected favorite model migration, added favorites controller and views
Modified favorites controller and partial
Made favorite policy and modified partial
Added favorite mailer and new comment mail content
Fixed mailer view
Added callback to comment model
Filled in user spec
Made topics private using scopes, added spec
Added capybara gem
Made sign in feature spec
Updated sign in spec
Added email preference for favorites
Added minimum routes, controller action, view for users
Got user profile page to pass specs
Refactored user profile view
Fixed application menu
Added admin user to profile spec
Modified comment spec