Prevent Google from crawling Manuals

During development, we want to exlude Google from crawling until we make
the manuals public.

Relates to
https://trello.com/c/wtCTzva1/106-block-hmrc-manuals-from-google-1
Make content full width on < tablets
Add class for .subsection-with-id

So that titles wrap properly rather than going onto a new line at 85% width and manuals without ids don't have an indented chunk.
Fix alignment on breadcrumbs

Using first-child selector instead of a class so breadcrumbs in ie678 will be indented by 5px.
Update section title styles to match design
Bump frontend toolkit

So I can use $three-quarters
Fix wrapping on open all/close all links

- put title + links in wrapping div
- float the title and links
- display block for width < tablet
- make links align to the left/right margins