Add groups to allowable groups

Trying to save `The Milstein Program in Technology in Humanity` and `Under Represented User Experience (URUX)` as a user's groups doesn't go through because this is not included in the backend.

Can we either add these to allowable groups or just remove constraints on allowable groups/interests/talkingPoints altogether. We do such stringent checks and it doesn't make a whole lot to sense for now because frontend can guarantee we always send you correct values and it slows us down having to go back and forth on small changes like adding or removing a group. Especially since we're still working / will keep working on adding more partner groups throughout the semester. But this is up to the backend team.

Note: high priority because we need this for the frontend and for our launch to soft launch users.