Show time since current status in My Trades, not since trade start #71
Description
The time shown next to the orders in My Trades should be the time since they entered that status, not since the trade began:
For example, in that image, in the order above, the trade had started 6 minutes ago, but was cooperatively canceled. It should show the time since the order was canceled, not since it began, and so on when changing to other statuses.
