Can't view contents of containers in Inventory

Some method of being able to view the contents of a container in your inventory (from the Item Containers module) would be pretty swell.

Start by locating the Item Containers module and the inventory view entry point. Read how containers are currently represented and rendered, then determine the intended interaction for opening one. Done means users can view a container's contents from their inventory, with the behavior covered by the relevant existing tests if available.

Written by the indexing model from the issue text.