Update Feedback Form Permissions

[mileswatson]

Currently, the feedback form permissions are hardcoded in the people.ts file.

This file needs to be updated whenever the committee changes so that:

• CRSids match JCR email prefixes
• the valid_revealers and valid_responders split is agreed upon by the current committee
• committee_recipients contains exactly the committee members that opt in to receiving general feedback submissions

Hint: exec_recipients can probably be merged into committee_recipients (but check first)