Enable crafting arrows in stacks.

[sokaku 50]

As a survivor, when I am adding the fletching to improvised arrows (feathers), I should have the option to work with the entire stack. When sharpening the sticks there is an option to sharpen all sticks, it would save time and inventory management to add fletching to the entire stack. Crafting time (animation) should reflect the # of arrows being worked.

On a side note, the crafting recipe for an arrow should be revised to 3 feathers per arrow.

[Arthur Dubrovka 376]

I hope and think the whole crafting will get an overhaul if DayZ hits beta. It needs to be more intuitive.