vcnc-web: fix deprecated PropTypes package, as advised by React 15.5. Ironically, Facebook's own fbjs package hasn't done this yet, so the warning doesn't go away
vcnc-web: fix deprecated PropTypes package, as advised by React 15.5. Ironically, Facebook's own fbjs package hasn't done this yet, so the warning doesn't go away

nicko7i/vcnc,nicko7i/vcnc,nicko7i/vcnc,nicko7i/vcnc,nicko7i/vcnc,nicko7i/vcnc,nicko7i/vcnc