fixed EXT-3607 (Cancelling a Land Sale to Specific Person Allows Land to be...

fixed EXT-3607 (Cancelling a Land Sale to Specific Person Allows Land to be Set For Sale to Anyone Briefly)

added additional check so that "for sale to anyone" text is shown only when a parcel is on sale

reviewed by Richard at https://codereview.productengine.com/secondlife/r/4/

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branch : product-engine