Mark old columns as deprecated
Mark old columns as deprecated

This will prevent ActiveRecord from throwing any hissy fits when they are
eventually dropped due to it trying to update/set non-existent columns.

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