If you feel like buying my a coffee for my efforts feel free: http://buymeacoffee.com/Darpeh
This aura adds buttons to the trade window for water/food that allow you to post single stacks, 3 food/3 water, or fill the remaining trade window slots with stacks of 20. There's also a stacker that auto-consolidates stacks of water/food when you create them if blizzard's system fails to. You may select any rank of food or water you wish but you will need to reload the ui in order to refresh the buttons. This can't be helped.