Clears the menu before adding to it
Clears the menu before adding to it

We can't just replaceWith() because the menu starts empty. So just
empty() it first, then append().

Fixes #428

slambert/showoff,slambert/showoff,puppetlabs/showoff,marrero984/showoff,marrero984/showoff,wanix/showoff,slambert/showoff,marrero984/showoff,slambert/showoff,marrero984/showoff,wanix/showoff,puppetlabs/showoff,binford2k/showoff,puppetlabs/showoff,wanix/showoff,binford2k/showoff,puppetlabs/showoff,binford2k/showoff,binford2k/showoff