Missing validation check in volunteerTable.js

[zephyyrr]

For some reason, a user was able to submit a application to the off-site moderation team without any questions, so the volunteer.questions field is set to undefined.
This causes the whole table for the role to not show.

Suggested solution:
Add additional validation and error handling here to catch error like this from breaking the UI.
Try to figure out how the situation happened in the first place.