Move Firebase API details into a store
Replaced React.addons.classSet with an impl which takes a string for classNames which should always be included
Added level numbering to Comment classNames
Added a footer
Removed padding from main container so children can use full width
Added containers so child components can manage their use of width independent of their parents
Comments now use full width, so highlighting of new comments is less visually jarring
Renamed User to UserProfile
Only show pagination controls on the bottom
Added marking new comments as read
Comment new status is now derived from props passed from the Item
Tidied props related to showing spinners for Comments and viewing permalinked comments