asc_bootstrap - sass updates, link and heading colors for accordions w/ bkgd...

asc_bootstrap - sass updates, link and heading colors for accordions w/ bkgd color, accessibility updates for accordions and slideshow, adding class to paragraph 2 and 3 columns to signify number of cols, updating sass so that headings in paragraph 2 and 3 cols line up with top of div, adding nav hide to basic page slideshows