start creating tabbed document page
having weird styling issues with the tab nav :focus
style tweak for document page tab
Merge branch 'master' into issue378

Conflicts:
	public/css/style.css
Change second tab to Discussion
toc styling
Tabbed layout
Added tree-style subcomments, commenting on subcomments missing
Clean up code from previous implementation
Added replying to subcomments, fixed various display bugs
Fixed bug with subcomment display
Removed old code
Fixed subcomment scope
Split annotations and comments into separate controllers, fixed annotations and updated blade structure
Removed defunct bill description tab that would cause errors
Merge branch 'master' into issue378

Conflicts:
	public/build/app.js
	public/build/app.map
	public/css/style.css
	public/templates/activity-item.html
Removed description tab
Merge branch 'issue378' of https://github.com/opengovfoundation/madison into issue378
Added CSS styling and comments to Angular controller
Merge branch 'master' into issue378