Discount previously rung items once threshold is crossed.
Merge branch 'akt-bugfixes' into akt-master
Bad variable names
Merge branch 'akt-bugfixes' into akt-master

Conflicts:
	pos/is4c-nf/lib/Scanning/PriceMethods/MoreThanQttyPM.php
Merge branch 'akt-master' of github.com:CORE-POS/IS4C into akt-master