Fix 'last' price in header.  Sometimes there are a bunch of transactions with the same timestamp, so sort by txid instead to find the last one.
Fix 'last' price in header.  Sometimes there are a bunch of transactions with the same timestamp, so sort by txid instead to find the last one.

dooglus/intersango,dooglus/intersango,bankonme/intersango,dooglus/intersango,bankonme/intersango,bankonme/intersango,bankonme/intersango,dooglus/intersango