Add new footer design.

Only show footer for transaction dashboards.
Add styles for new footer design.

Amend related_pages styles so they work in both the header and footer.
Update Stagecraft stubs for new footer design
Update cucumber tests.

Remove explicit classes from sections in the footer, since we don't
need them.

Add generic cucumber test for footer sections.

Update cucumber tests for .related-pages to deal with the fact that
this now exists in both the header and the footer.
Add missing apostrophe in description
Indent correctly
Use standard grey
Merge pull request #298 from alphagov/feature/new-footer-design

New footer design for dashboards
Use a consistent assets path in all environments

So that we can start using relative paths for images in our Sass
in all environments without a funky conditional.
Remove page-per-thing JSON that snuck in

From my pull request a few days ago.
Merge pull request #310 from alphagov/consistent-assets-path-for-all-envs

Use a consistent assets path in all environments
Bump the frontend toolkit from 0.12.6 to 0.46.0

This might look like a big jump in version numbers but the diff
isn't that huge.

https://github.com/alphagov/govuk_frontend_toolkit/compare/ef84748...44d129d
Set $path correctly in Sass

This points to the base directory where Sass should look for images.
Remove separator.png from assets directory

This is already copied over into the public directory from the
govuk_template, so it's just duplicated here for no good reason.
Use file-path mixin for our own assets

This doesn't give us cachebusting, but it's a nice enough solution
for the time being.
Remove NTA Tabular Numbers in header/footer links

Chrome on Windows doesn't link it.

https://code.google.com/p/chromium/issues/detail?id=344347
Merge pull request #314 from alphagov/bugfix-remove-tabular-numbers-from-header-links

Remove NTA Tabular Numbers in header/footer links
Update development dependencies

I don't think there's anything in here we need to be too
concerned by.
Remove redundant lint-branch task

There's no lint on master, so if you've introduced lint it is
by definition on your branch.
Update documentation