Adde Google Webmaster Tools site verification code
Added GWT verification to the other layout
Updated the robots.txt to disallow admin and moved sitemap to top
Updated the Humans.txt
removed else block for nil current_user
Use Airbrake.io
added import of admin.css.scss to application.css.scss
added styling for comments heading and icon
added spec for #users_background_image
added header and icon on comments index view
Updated Airbrake configuration
Updated Airbrake gem
Explode if Airbrake is not installed
Merge pull request #219 from YaroSpace/bounty_390_comments_markup

Bounty 390 comments markup
Merge pull request #218 from YaroSpace/bounty_389_undefined_method_banner

Bounty 389 undefined method banner
removed else block for nil current_user
added import of admin.css.scss to application.css.scss
added styling for comments heading and icon
added spec for #users_background_image
added header and icon on comments index view