Edit/Leave/Delete board

[tylerminnis]

acceptance criteria

• if user is owner of board, render delete button, else render leave button
• on click of button, alert needs to confirm (similar to alert on profile.tsx)
• if confirmed delete && user == board_owner then send request to server to delete
• if confirmed leave, send request to update user permissions to remove all permissions associated with that board (not mvp but we said it would be done)

[tylerminnis]

acceptance criteria for edit

• in board settings, when save button is clicked then send update request
• only owner is allowed to make request so disable inputs/buttons as necessary
• should update title
• reuse logic from edit panel