Examine source code of Durchschnittzel

{
  "manifest_version": 2,
  "name": "Durchschnittzel",
  "version": "1.4resigned1",
  "description": "Automatically calculates the Weighted Average Grade in the QIS Notenspiegel in Goethe Uni Frankfurt",
  "applications": {
    "gecko": {
      "id": "score@if-act.net",
      "strict_min_version": "45.0"
    }
  },
  "icons": {
    "48": "icons/icon-48.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://qis.server.uni-frankfurt.de/qisserver/rds?state=notenspiegelStudent&next=list.vm*"
      ],
      "js": [
        "persister.js",
        "score.js",
        "draggable.js"
      ],
      "css": [
        "score.css"
      ]
    }
  ]
}