Fix dropdown javascript initialization in docs.
Add javascript docs for accordion.
Add tests for multi_expand accordions.
Fix: Modal does not have background outside viewport on small medials

If the reval modal is larger then the viewport the background disappears
when scrolling the modal up. The cause is the the height: 100vh, that
limits the height of the modal to the viewport height.
Fix: topbar title h1 disappers behind menu item.

This is only a small issue and I am not sure whether it really matters
in a really live context. When pulling the browser window smaller, the
title disappears behind the Menu item. This can be remedied by giving
the title a little more space. There is still sufficient space for the
Menu item.
Fix parentheses typo in slider that caused problems with the initial setting
Merge pull request #4866 from karland/Patch-2

Fix: topbar title h1 disappers behind menu item.
Adds the error_labels value for Abide to the JS data options example
Remove experimental _xy-center.scss
Merge branch 'master' of github.com:zurb/foundation
Fix throttle implementation
Allowing main breadcrumb color setting to work in nav and ul containers.
fixed: "Invalid CSS property value"

https://github.com/zurb/foundation/issues/4747
Re-enable tooltips for <a> tags.
Merge branch 'accordion-docs-and-tests' of github.com:joshuajabbour/foundation into joshuajabbour-accordion-docs-and-tests

Conflicts:
	doc/pages/components/accordion.html
Update accordion tests to use proper Foundation initialization
Merge pull request #4867 from voku/orbit_fix

fixed: "Invalid CSS property value"
Merge pull request #4865 from karland/Patch-1

Fix: Modal does not have background outside viewport on small medias
fix clearing with blockgrid
fix ios 7.1 buttons