Examine source code of PARQR

{
  "manifest_version": 2,
  "name": "PARQR",
  "description": "Piazza Automated Related Question Recommender. PARQR recommends similar posts on Piazza to save you time!",
  "version": "2.0.3",
  "browser_action": {
    "default_icon": {
      "19": "media/parqr.png",
      "128": "media/parqr_128x128.png",
      "512": "media/parqr_512x512.png"
    },
    "default_popup": "parqr.html"
  },
  "icons": {
    "16": "media/parqr_16x16.png",
    "128": "media/parqr_128x128.png",
    "256": "media/parqr_256x256.png"
  },
  "permissions": [
    "activeTab",
    "http://*.parqr.io/*",
    "http://*.piazza.com/*"
  ],
  "background": {
    "scripts": [
      "src/background.js",
      "src/http-common.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.piazza.com/*"
      ],
      "js": [
        "js/jquery.min.js",
        "js/chartist.min.js",
        "js/datatables.js",
        "js/md5.min.js",
        "src/parqrLib.js",
        "src/homescreenSuggestions.js",
        "src/searchSuggestions.js",
        "src/dashboard.js",
        "src/observer.js"
      ],
      "css": [
        "css/bootstrap-scope.css",
        "css/buttons.css",
        "css/dashboard.css",
        "css/datatables.css",
        "css/fonts.css",
        "css/homescreenSuggestions.css",
        "css/parqr.css",
        "css/searchSuggestion.css"
      ],
      "run_at": "document_end"
    }
  ],
  "web_accessible_resources": [
    "media/*",
    "fonts/*"
  ]
}