[ic] newbie: don't show price=0.00

[interchange-users@interchange.redhat.com (Cory Trese)]

In my development I found it cleaner to store 0.00 as '0' and use [currency]
(or whatever it is now called) to display the value ... we had some similar
issues a long time ago with 0 priced, not available items.

Back from a long time off this list,

Cory Trese

>The tag if-item-data or if-item-field or if-XXX-field etc will only check
>that there is a  "non-empty, non-zero " and  0.00 will be counted as a
>true value because of the decimal point.