Merge pull request #11 from thnkloud9/master

initial optimization commit
Dotted some i's and crossed some t's as well as constraining the chapter title selection criteria to the main images and videos. I know they're implicit but I'd like to be definite.
Mute and collapse menus now styled.
Nav menu added. Unfinished.
Commented out Mark's unfinished class.
I think we're getting somewhere with the menu now.
Chapter-title improvements.
This  doesn't work as well as I'd like right now but we're getting there with it.
Menu icon.
Actually check to see if the article has a display title or not, if not don't do anything.
Added name selector to slideshows. Not sure how I missed that.
Moved article number to inside the href.
Match elements on header nav click and then animate to point in page.
Matching main nav to current element in viewport
Nav matching on deferred scroll action.
We don't need full screen maps. F*** 'em.
Set nav matching to remove all classes before doing the check again.
Removed size checks that are unneeded from the nav matching
Whoops, accidentally removed the fullBot variable.
Tidied up the active menu state.