Merge branch 'wikipedia'

package.json

@@ -5,6 +5,7 @@
   "dependencies": {
     "axios": "latest",
     "body-parser": "^1.18.3",
+    "@c0b41/ytclear": "^1.0.0",
     "bootstrap": "^4.1.3",
     "express": "^4.16.4",
     "lodash-id": "^0.14.0",
@@ -17,6 +18,7 @@
     "react-router-dom": "^4.3.1",
     "react-scripts": "2.1.1",
     "react-youtube": "^7.8.0",
+    "wikidata-sdk": "^5.15.9",
     "wikijs": "^4.8.1"
   },
   "scripts": {