message: updating react-alert dependency to v2.3.0
  it was downgraded in commit
  The old version used React.PropTypes and it was deprecated.
  This version is compatible with React 15+.
  Fix
diff: "react-ace": "^5.0.1",
  "react-addons-css-transition-group": "^15.6.0",
  "react-addons-shallow-compare": "^15.4.2",
  - "react-alert": "^1.0.14",
  + "react-alert": "^2.3.0",
  "react-bootstrap": "^0.31.2",
  "react-bootstrap-table": "^4.0.2",
  "react-dom": "^15.6.2",
  