updated subsection navigation module
Merge branch 'feature/29' of https://github.com/PaulKinlan/WebDocs into feature/29

* 'feature/29' of https://github.com/PaulKinlan/WebDocs: (82 commits)
  remove console log
  Finishing nav
  Tweaks to article page for lessons TOC
  Working on navigation
  Adding lessons TOC to article detail page
  Reverting grunt config
  update scripts
  Update istouch check
  Improve nav css
  Demo JS
  Latest CSS updated. Legacy files removed.
  s/code/build
  Fixing some copy on demo
  Fixing padding and stuff on demo
  Some more changes
  Updating the sample app for the getting started guide
  Update index.markdown
  Update index.markdown
  Update index.markdown
  Update index.markdown
  ...