exchange order history shows wrong data on OrderFill events

[treerz]

in modules/ethereum/tradeTransactions.js
formatTradeEvent() method
the conditions for orderId and direction are completely wrong:

• event.name does not exist: event.name should be event.event, that is what contains e.g. "OrderFill"
• the condition using weiAmount is nonsense in case of OrderFill: weiAmount is never zero (for OrderFill events), which means for both direction and id columns we choose "buy", regardless of the actual direction
• e.orderId does not exist for OrderFill events, which leaves only the wrong weiAmount check
• the type parameter of the method is correct in case of OrderFill-s (it is either "buy or "sell"), it is recommended to use that for both conditions in case of OrderFill events: if event.event is "OrderFill", then direction should be exactly what type is, and orderId should be either e.buyTokenOrderId or e.sellTokenOrderId according to type.

Note: these codes have been significantly changed since the last deploy, so the current staging and master versions are different (both are wrong, but in a different way). Above comments refer to current staging version (bafd0c3).