message: Update dependencies reported by GreenKeeper
diff: "request": "~2.85.0",
  "sanitize-html": "1.4.2",
  "sequelize": "^4.35.1",
  - "serve-favicon": "~2.4",
  + "serve-favicon": "~2.5",
  "serve-index": "~1.9",
  - "socket.io": "~2.0",
  + "socket.io": "~2.1",
  "sqlite3": "~4.0.0",
  "swagger-ui-express": "~3.0.5",
  "z85": "~0.0"
  "shelljs": "~0.8.1",
  "sinon": "~5.0.0",
  "sinon-chai": "~3.0.0",
  - "socket.io-client": "~2.0",
  + "socket.io-client": "~2.1",
  "standard": "~11.0.0",
  "stryker": "~0",
  "stryker-api": "~0",
  