Remove unused layout
Remove unused Sass files relating to old design patterns content
Create design pattern page layout and styles
Remove unused page status styles
Reduce margin of page headers
Add pattern example container styles
Add design pattern guides and example images
Merge branch 'master' into add-section-on-design-patterns
Content updates and corrections following review with team
Create 'GOV.UK Elements' landing page

This page links to the alpha version of the GOV.UK Elements.

It's included here  so that searching the Service Manual for things like 'colour' will return a result.
Delete obsolete guides and update or remove links to them

See this spreadsheet for details of what redirects we'll need: http://goo.gl/QYgkES
Delete unused pattern example images
Remove direct links to heroku and explain alpha status of elements page
Remove reference to Heroku
Update copy to clarify that the guide is not hosted on GOV.UK
Merge pull request #355 from alphagov/add-section-on-design-patterns

Add section on design patterns