Upgrade server dependencies

package.json

@@ -90,8 +90,8 @@
     "bluebird": "^3.5.0",
     "body-parser": "^1.12.4",
     "bull": "^3.4.2",
-    "cli-table": "^0.3.1",
     "bytes": "^3.0.0",
+    "cli-table": "^0.3.1",
     "commander": "^2.13.0",
     "concurrently": "^4.0.1",
     "config": "^2.0.1",
@@ -143,7 +143,7 @@
     "validator": "^10.2.0",
     "webfinger.js": "^2.6.6",
     "webtorrent": "^0.102.1",
-    "winston": "3.0.0",
+    "winston": "3.1.0",
     "ws": "^6.0.0",
     "youtube-dl": "^1.12.2"
   },
@@ -191,7 +191,6 @@
     "maildev": "^1.0.0-rc3",
     "mocha": "^5.0.0",
     "nodemon": "^1.11.0",
-    "prettier": "1.14.2",
     "sass-lint": "^1.12.1",
     "source-map-support": "^0.5.0",
     "spectacle-docs": "^1.0.2",