Add keys to FeedbackComponent array elements
Add keys to FeedbackComponent array elements

Summary:
Was getting a react warning whenever the feedback prompt opens.
This stops it from happening.

Reviewed By: mweststrate

Differential Revision: D18780008

fbshipit-source-id: e4635f7a8322e25a3eea1c201974a100d1f1327a

facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper