Add missing !default to $topbar-button-font-size 

`$topbar-button-font-size` doesn't allow for overriding in the _settings.scss
file, as it doesn't have the `!default` rule.
Update foundation.interchange.js

Change regex so it only matches images
Merge pull request #4711 from malthejorgensen/patch-1

Add missing !default to $topbar-button-font-size
Merge pull request #4708 from clyates/master

Update foundation.accordion.js
Fix whole number regex.
merge conflict.
fixed: "carousel" with only one "li" (+ using "S" selector)
Fix regular expression for image detection.
Merge pull request #4715 from voku/patch-clearing_v3

fixed: "carousel" with only one "li" (+ using "S" selector)
Update Interchange regex to allow cache-breaks.
add next_on_click setting for Orbit
Update JS options in joyride documentation
Merge pull request #4719 from kevcha/joyride-doc-defaults

Update JS options in joyride documentation
Merge pull request #4378 from LaunchEngine/master

Added a 'validate' event to Foundation.libs.abide
Update foundation.interchange.js

Use regex literal to remove need for regex var
New regex tests for an image extension at the end of path
Merge branch 'master' of https://github.com/adaddeo/foundation into adaddeo-master

Conflicts:
	js/foundation/foundation.abide.js
Merge pull request #4632 from Xarieyle/patch-1

Fix Duble scroll if using Pizza Pie
Merge pull request #4595 from serglo/patch-3

Add variable to control button border-color
Merge pull request #4610 from ElliottJRo/master

Allow '#/home/start' magellen targets
Merge pull request #4590 from syko/master

Add active_class to dropdown button as well