add redirect for renamed article permalink
add redirect for renamed article permalink

also, remove "article" from the `from` how-to URL because the how-to site doesn't have "article" in the URLs
meker12/nexus-control,meker12/nexus-control,rackerlabs/nexus-control,meker12/nexus-control,rackerlabs/nexus-control,rackerlabs/nexus-control