Dates don't appear in the matrix view

[graft]

A consignment is a computed result from Archimedes - sometimes, if we queried Magma for some date_time fields, we might get a matrix back in this consignment with a column of dates. The consignment view in the "Manifests" window of Timur is supposed to facilitate interacting with this consignment, and the matrix within that.

However, this matrix view of the consignment result fails to display dates correctly. It is clear that Timur has received the dates correctly from Archimedes, as if we download the matrix data as a TSV the dates appear to be in there. In the table rendered in Timur, however, the dates appear to be blank (that is, missing).