Adds toggles to Improvements page.
Makes toggle hit area cover whole title, adds first hovers.
Adds and styles static More content on Improvements page.
Tweaks colour for bold bits of requirements titles.
Small IE fixes and style tweaks.
Added correct help text and discussion links 
to the improvements page.
Changed requirements to pick up help text from
related question or answer .
Merge branch 'refs/heads/master' into improvements-page-redesign

Conflicts:
	config/locales/en.yml
Merge branch 'refs/heads/master' into improvements-page-redesign

Conflicts:
	app/assets/stylesheets/application.css.less
	config/locales/en.yml
Merge pull request #729 from theodi/improvements-page-redesign

Improvements page redesign