Set up Travis test environment (cont.)
Set up Travis test environment (cont.)

Adds the `--no-sandbox` flag to the headless Chrome to see
if that causes Chrome to exit on Travis CI (instead of
running forever).

UMM-CSci-3601-F17/interation-1-drop-table-teams,UMM-CSci-3601/3601-lab4_mongo,UMM-CSci-3601-F17/interation-1-drop-table-teams,UMM-CSci-3601-F17/interation-1-drop-table-teams,UMM-CSci-3601-F17/interation-1-drop-table-teams,UMM-CSci-3601/3601-lab4_mongo,UMM-CSci-3601-F17/interation-1-drop-table-teams,UMM-CSci-3601/3601-lab4_mongo,UMM-CSci-3601/3601-lab4_mongo