Added Anatomy of a Rebase Post

Added blog post on the subject of git rebasing and which commits to
squash.
Added highlights to git log examples
Added custom domain.

Added custom domain for Github Pages.
Narrowed post pages for better readability
Added semantic article tags to blog posts.
Increased size of posts text to be more readable.
Added automatic feed discovery.

Added a link to the RSS feed in the header for automatic feed
discovery.
Fixed link to favicon on sub-pages

Link to favicon was broken on pages in sub-folders. Fixed with a
relative link to the favicon.
Removed JBake Bootstrap customisations

Removed JBake customisations to fixed navigation bar. This was causing
fragment links to disappear under the navigation bar.

Removed footer style customisations in favour of Bootstrap default.