Fixed a bug where the tare zero would continually prompt for the weight.

Conflicts:
	pos/is4c-nf/plugins/PropmtForTare/TarePropmtInputPage.php

Conflicts:
	pos/is4c-nf/plugins/PropmtForTare/TarePropmtInputPage.php
Fixed a merge issue what I left flags in the file
pos/is4c-nf/plugins/PromptForTare/TarePrompotInputPage.php making it unreadable.

Conflicts:
	pos/is4c-nf/plugins/PropmtForTare/TarePropmtInputPage.php
Code Clean up on
pos/is4c-nf/plugins/PropmtForTare/TarePropmtInputPage.php
Fixed a bug in PrehLib that was causing "*" not to work
multiplication wasn't working because the price was being added insteand
of the calulated total in PrehLib.php
Fixes and issue I made with the tare prompt when I merged a cherry-picking
Merge pull request #351 from FranklinCoop/core_master

Tare Prompt merge fixes and a Multiply (*) key bug fix