npm_and_yarn in /frontend for brace-expansion, brace-expansion, form-data, js-yaml, js-yaml, postcss, postcss, react-router, react-router, react-router, react-router, react-router, ws - Update #1511931801

npm_and_yarn in /frontend for brace-expansion, brace-expansion, form-data, js-yaml, js-yaml, postcss, postcss, react-router, react-router, react-router, react-router, react-router, ws - Update #1511931801 #124