Draft JS for `?` help toggle
Add help toggle support
Add Help initial content
Add help styling
Replace custom help with Bootstrap modal
Remove custom modal style in favor of Bootstrap one
Merge remote-tracking branch 'origin/master' into curriculum-help-feature
Merge remote-tracking branch 'origin/master' into curriculum-help-feature
Combine Help and TOC toggle into single function
Add help for TOC toggle
Merge pull request #266 from github/curriculum-help-feature

Add "?" help toggle, modal help dialog