QOL: Trade screen overview

**Game version**
v 0.6.3 beta

**Description**
It is difficult to be sure of the status of all running caravans when there are a large number of simultaneous caravans running.

Somewhere on the 'trade' page, or on a separate page, I'd like for there to be an 'overview' where you can see all of the current running caravans, their time, etc.