First draft of header & footer guidance
Tightened intro paragraph. Shorter sentences.

Recast opening sentences to be be user-centric.
Add images of header examples
Merge branch 'master' of github.com:alphagov/government-service-design-manual into header-footer-guidance
Merge branch 'header-footer-guidance' of github.com:alphagov/government-service-design-manual into header-footer-guidance
Add content templates
Update images and template guidance
Add supporting change guidance
Add architecture guidance
As government as a platform guidance
Add security as enabler guidance
Move spending controls guidance
Add service integration guidance
Add service integration guidance
Some text tightening on cultural blockers
Minor text and typo edits to GaaP
Add new guide templates
Update table
Draft end user devices content
Draft technology code of practice