Merge branch 'v6.3' of https://github.com/zurb/foundation-sites into v6.3

* 'v6.3' of https://github.com/zurb/foundation-sites: (24 commits)
  Changed an to a
  add settings var for accordion title font size
  Fixed broken link - changed Business to Premium
  Updated CDN Links to Latest
  Correct vertical tab 5/6 links
  Fix incorrect comment in pagination
  removes yl links from docs
  Fixed id typos
  Added documentation for orbit image mixin.
  Removed extra "." from class name
  Update starter-projects.md
  add scss var for input font weight
  some text changes thanks @brettsmason
  Added showAll using down() for all elements. Rewrote hideAll to use up() for all elements.
  Only show thumbnail shadow hover on links
  adds feature ScrollTop to Drilldown Menu scrollTop scrollTopElement scrollTopOffset animationDuration animationEasing
  remove hover from .unstriped table snippet
  Oops! Fix hardcoded table background color used for debugging.
  Add options to unstripe Tables
  add global option to decide its animated toggle or not
  ...

# Conflicts:
#	js/foundation.accordionMenu.js