Use border-box model on all elements

 modified:   app/assets/stylesheets/base.css.scss
Moved partial template container elements to main layout template

 modified:   app/views/layouts/_footer.html.erb
 modified:   app/views/layouts/_header.html.erb
 modified:   app/views/layouts/_sidebar.html.erb
 modified:   app/views/layouts/application.html.erb
Styles to create a simple grid adapted from a post from CSS-tricks.com

 modified:   app/views/layouts/application.html.erb - places content and sidebar
              in column divs, which are in turn inside a grid div element.
             * unlike CSS-tricks, use `first-child` selector so that IE8 is
              supported

 modified:   app/assets/stylesheets/base.css.scss - removes margins from content
              and sidebar elements and adds padding to containing grid div
Center alings sidebar headings

 modified:   app/assets/stylesheets/base.css.scss
Merge branch 'media-queries' into develop-blog

 Single media query for wider devices, which floats sidebar as a column aside the
main content, using a simple grid system
Creates mixins SCSS file with clearfix mixin

 new file:   app/assets/stylesheets/_mixins.scss
 modified:   app/assets/stylesheets/base.css.scss - include clearfix where required
Creates a box-sizing mixin

 modified:   app/assets/stylesheets/_mixins.scss
 modified:   app/assets/stylesheets/_variables.css.scss - moves gutter-width here
 modified:   app/assets/stylesheets/base.css.scss
Refactors some font colours

 modified:   app/assets/stylesheets/_variables.css.scss
 modified:   app/assets/stylesheets/base.css.scss
Removes some redundant styles

 modified:   app/assets/stylesheets/base.css.scss
Replaces border widths with multiples of $single-border-width variable

 modified:   app/assets/stylesheets/base.css.scss
Adds another sidebar to display recent posts

 modified:   app/views/layouts/_sidebar.html.erb
 modified:   app/views/layouts/application.html.erb - aside elements should be
              in sidebar partial, there is one for each sidebar
Adds bottom margin to sidebars on wider screens

 modified:   app/assets/stylesheets/base.css.scss
Removes unneccessary id selcetor in sidebar links

 modified:   app/assets/stylesheets/base.css.scss - font-size is slightly smaller
 modified:   app/views/layouts/_sidebar.html.erb
Largens the screen width at which to show sidebar as side of main content

 modified:   app/assets/stylesheets/base.css.scss - with post titles the sidebar is too
              squashed at 25% and approx 600px
Creates a `recent` scope for Article model

 modified:   app/models/article.rb - also defines a default number of articles
              (for recent scope/pagination)
 modified:   app/views/layouts/_sidebar.html.erb
Adds a sidebar to contain information about the site

 modified:   app/assets/stylesheets/base.css.scss
 modified:   app/views/layouts/_sidebar.html.erb
Merge branch 'more-sidebars' into develop-blog

 Creates scope for recent Articles
 Adds a sidebar for recent Posts
 Adds a sidebar for general blog information/blurb/profile
Removes Article tags from article_footer and restyles it

 modified:   app/assets/stylesheets/base.css.scss
 modified:   app/views/articles/_article_footer.html.erb
Tidies up article footer meta elements by removing unneccessary ID selectors

 modified:   app/assets/stylesheets/base.css.scss
 modified:   app/views/articles/_article_footer.html.erb
Creates variable for border colour, which is uniform according to the theme

 modified:   app/assets/stylesheets/_variables.css.scss
 modified:   app/assets/stylesheets/base.css.scss