Take buddy picture - new flow

This feature branch creates a new ui for taking a buddy picture from a users webcam.  A 'Take' button is overlayed on the video for the user to take a picture. A larger preview of the taken picture is immediately available afterward. If the user wants to take another picture a 'Retake' is displayed for them over the previewed image.  A countdown of 3secs with the numbers 3,2,1 is included before a picture is taken.