Only migrate tags on new editions
Only migrate tags on new editions

We have run the tagging on older editions on production so we should
only need to update the taggings on newer editions.

robinwhittleton/whitehall,askl56/whitehall,alphagov/whitehall,ggoral/whitehall,YOTOV-LIMITED/whitehall,ggoral/whitehall,hotvulcan/whitehall,alphagov/whitehall,ggoral/whitehall,YOTOV-LIMITED/whitehall,hotvulcan/whitehall,YOTOV-LIMITED/whitehall,hotvulcan/whitehall,robinwhittleton/whitehall,askl56/whitehall,hotvulcan/whitehall,ggoral/whitehall,robinwhittleton/whitehall,alphagov/whitehall,askl56/whitehall,robinwhittleton/whitehall,alphagov/whitehall,YOTOV-LIMITED/whitehall,askl56/whitehall