Restoring namespaced events

Namespaced events were added by @thedeerchild  here: https://github.com/zurb/foundation/commit/179f3d1fc2a0bc785438ec1a74faf5ef86855f81
Then they were removed here (probably by mistake): https://github.com/zurb/foundation/commit/179f3d1fc2a0bc785438ec1a74faf5ef86855f81
That commit was partially undone here: https://github.com/zurb/foundation/commit/4e164cc29cedf8e9bd5c312483a90f454c69dc72
But the namespaced events weren't restored.  This commit re-adds them, as specified in that first commit.  
Without namespaced events, Abide doesn't act like the Events section of its documentation says it should here: http://foundation.zurb.com/docs/components/abide.html#events
Merge pull request #5947 from jeffclemens/master

Restoring namespaced events for Abide