Set header, footer and generic banner alignment

- Remove outer block and inner block from global scope (delete layout
file)
https://github.com/alphagov/govuk_template/pull/70#discussion_r11297250
- Add missing front end toolkit dependencies to footer
- Add outer block and inner block to global cookie message
- Leave header alone, since padding on .content allows smoother resize
with propositional navigation
Merge branch 'align-all-the-things' of github.com:gemmaleigh/govuk_template into align-all-the-things