add fix for Foundation Tabs plugin

TODO: remove when foundation/foundation-sites#12464 is released

frontend/overrides/foundation.tabs.js

@@ -0,0 +1,53 @@
+'use strict';
+
+import { Tabs } from 'foundation-sites/js/foundation.tabs';
+
+/**
+ * Correctly handle history changing if the page has `<base>` tag
+ */
+export default class LocationAwareTabs extends Tabs {
+    /**
+     * @inheritDoc
+     */
+    _handleTabChange($target, historyHandled) {
+
+        // With `activeCollapse`, if the target is the active Tab, collapse it.
+        if ($target.hasClass(`${this.options.linkActiveClass}`)) {
+            if(this.options.activeCollapse) {
+                this._collapse();
+            }
+            return;
+        }
+
+        var $oldTab = this.$element.
+            find(`.${this.options.linkClass}.${this.options.linkActiveClass}`),
+            $tabLink = $target.find('[role="tab"]'),
+            target = $tabLink.attr('data-tabs-target'),
+            anchor = target && target.length ? `#${target}` : $tabLink[0].hash,
+            $targetContent = this.$tabContent.find(anchor);
+
+        //close old tab
+        this._collapseTab($oldTab);
+
+        //open new tab
+        this._openTab($target);
+
+        //either replace or update browser history
+        if (this.options.deepLink && !historyHandled) {
+            if (this.options.updateHistory) {
+                history.pushState({}, '', location.pathname + location.search + anchor);
+            } else {
+                history.replaceState({}, '', location.pathname + location.search + anchor);
+            }
+        }
+
+        /**
+         * Fires when the plugin has successfully changed tabs.
+         * @event Tabs#change
+         */
+        this.$element.trigger('change.zf.tabs', [$target, $targetContent]);
+
+        //fire to children a mutation event
+        $targetContent.find("[data-mutate]").trigger("mutateme.zf.trigger");
+    }
+}