Avoid nesting need_to_know within other lists

www.agileplannerapp.com/boards/173808/cards/8707

prevents misaligned items in bulleted list:
https://private-frontend.preview.alphagov.co.uk/school-performance-tables?edition=4&cache=1417682394#what-you-need-to-know

![screen shot 2014-12-04 at 14 10 34](https://cloud.githubusercontent.com/assets/230074/5295540/5ff2436c-7bbf-11e4-80e8-1b5c815eeb24.png)