Remove "Call ID" from Conversations

Location: Admin Navigation > Clients > [Select Client] > Client Access > Agent > Conversations (dropdown) Request: Add the ability to show or hide individual fields in the Conversation Overview, such as Call ID, on a per-client basis. Reason: One of our clients doesn't need to see the Call ID. Letting us hide fields that aren't relevant to a given client would make the overview cleaner and easier for them to use. Proposed behavior: Visibility toggles should be available in two places. Admins can set which fields each client sees from the admin page, and clients can adjust their own view from the client-side page.