advertising PeerTube's rather simple DNT policy

package.json

@@ -100,6 +100,7 @@
     "flat": "^4.1.0",
     "fluent-ffmpeg": "^2.1.0",
     "helmet": "^3.12.1",
+    "ip-anonymize": "^0.0.6",
     "ipaddr.js": "https://github.com/whitequark/ipaddr.js.git#8e69afeb4053ee32447a101845f860848280eca5",
     "is-cidr": "^2.0.5",
     "iso-639-3": "^1.0.1",
@@ -129,6 +130,7 @@
     "sequelize-typescript": "0.6.6-beta.1",
     "sharp": "^0.20.0",
     "srt-to-vtt": "^1.1.2",
+    "useragent": "^2.3.0",
     "uuid": "^3.1.0",
     "validator": "^10.2.0",
     "webfinger.js": "^2.6.6",