feature request: net AND vat boxes for prices

[gabrielcrowe]

I wish for a box next to the existing price box, that is capable of calculating vat back and forth from net and vat inclusive.

the two boxes will update as i type in them, making it very easy to type for example, vat inclusive price, and ahve it calculate the net of that. if i type in the net box the vat box calcs the vat and if i type in the vat inclusive box, it works out the net.

this is for those people that have net values in their actinic table and then let actinic work up the vat.