replaced desktop screenshot
added some links to footer
changed call to actions to new text
added new visibility utility class for hiding on medium screens
added speech navigation buttons at visual bottom #171
Add links to everything.
added page for how to get involved
reordered and relabeled some footer links
Various text updates and fixes.
Change developer about URL.
MS link no longer opens in a new window
made tagline shorter to stop line wrap on mobiles
softened the shakespeare instance colour