Add section to view completed orders

[robinske]

(Instead of having them disappear completely). When they disappear from the view it's hard to remember what was just made.

Barista requested feature!

[dkundel]

Hmm this would require some changes as they are actually deleted from that Sync List but I might be able to cross correlate them from the AllOrders list that keeps track of the stats.

[philnash]

Rather than cross correlate, why not include a "complete" property to an order that can be used to filter across from the regular orders panel to a completed panel?