Fixes ITC-65: css present, html just needs to get added to production menu a la twix
refs ITC-111: templated out the post featured image
refs ITC-111: added some style and improved the templating for post featured image
fixes ITC-111: Enforced 4:3 aspect ratio on featured images for single posts
refs ITC-103: styled up some of the available content styles
ITC-127: added arrow image for the homepage menu (replaces glyphicon)
ITC-127: styled the homepage sidebar right-arrows
refs ITC-127: added left chevron image to the img folder for offcanvas button
refs ITC-127: modified the templates to use the new image chevron
refs ITC-127: styled the new chevron image for off canvas buttons
refs ITC-127: removed unnecessary javascript that changed the offcanvas button's class
fixes ITC-127: proper image displays when off-canvas button is active and inactive.  Framework laid for an alt image for active offcanvas button
fixes ITC-124: changed #4B81BF (and the rgb of that) to #628AC5 and its rgb to match mockup