Removed S3 asset hosting
Switched gravatar with a local version
Merge branch 'trunk' of github.com:FearMediocrity/fearmediocrity.co.uk into trunk

Conflicts:
	config.rb
Removed Modernizer to increase Google Page Speed score
Source the author avatar locally, as Gravatar has short expiring headers
Played around with the header stylings.
Removed the tags links for now.
Enabled automatic_image_sizes