Start tests for new company filtering
Start tests for new company filtering

This adds a start on testing for KK's new company filtering code. It
only checks the case that you make the _first_ call using company
filtering, and there not yet any testing of the fairly complex URL
editing logic that gotes on in `filterByCompany`.

UMM-CSci-3601/3601-lab4_mongo,UMM-CSci-3601/3601-lab4_mongo,UMM-CSci-3601/3601-lab4_mongo,UMM-CSci-3601/3601-lab4_mongo