Working policies on dashboard

may want extracting into subview
needs styling
initial styling, now display as block with header...
Merge branch 'master' into related-policies-subview

Conflicts:
	app/support/stagecraft_stub/responses/housing.json
Finish styles and add additional tests
Move .related-pages style into header block
Add small-screen styles for related policies
Add cucumber test for related pages
Fix for tagline style - see no-realistic-dashboard
Correct scope for context, float right except small screen
Do not show comments in browser, do not show .related if not needed
Use stagecraft response for related policies, fix tests appropriately
Much simpler styling for related pages
Remove outdated assertion
Tweak styles to match mockup
Merge pull request #64 from alphagov/related-policies-subview

Related policies subview