Tuned CSS files to transform theme styling a bit
Added possibility to add a copyright start date (taken from _config.yml) to the footer
Responsive-design fixes
Fixed padding
Merge branch 'styles-update'
Fixed disqus integration
Merge branch 'disqus-fix'
Added possibility to replace site's title (text) to an image: simply add "site_log: true" to _config.yml and the image "site-logo.png" will be automatically displayed in place of the <h1>. The header is left in the markup but moved away.

 Fixed styles/responsive design due to header modifications
Merge branch 'header-logo'