Merge tag 'v1.6.0'

[maven-release-plugin]  copy for tag v1.6.0
Merge tag 'v1.6.1'

[maven-release-plugin]  copy for tag v1.6.1
Updated version number to 1.7.0
Fix for rounding item issues
	Fixed rounding to stop creating a new price each time the rounding was used.
	Added script to remove old rounding prices (that are never used) and just add a single one.
^cash-106 Fixed
Updated the bill save click event to properly call the saveBill function.
	- ^cash-107 Fixed
[maven-release-plugin] prepare release v1.7.0
Merged changes from version 1.7.0 into develop.