message: Add back dottie and fix js-yaml version
diff: "config": "~1.26",
  "cookie-parser": "~1.4",
  "cors": "~2.8",
  + "dottie": "~2.0",
  "errorhandler": "~1.5",
  "express": "~4.15",
  "express-jwt": "~5.3",
  "hashids": "~1.1",
  "helmet": "~3.6",
  "html-entities": "~1.2",
  - "js-yaml": "0.2.0",
  + "js-yaml": "3.8.2",
  "jsonwebtoken": "~7.4",
  "jssha": "~2.3",
  "morgan": "~1.8",
  