asc_botstrap - sass updates, removing header and osu_nav regions, updating fontawesome, adding preprocess function that gives landing page it's own temp, setting up landing page temp, separating header and footer into their own include pages, updating mobile menu display, adding logo check to js

sass updates, setting up header and footer in their own include files, hard coding osu nav and header images and removing block regions for them, removing extra </div> in accordion for loop that's breaking things, hard coding search box to mobile menu, and updating call out boxes two