Examine source code of Tenion

{
  "manifest_version": 2,
  "name": "Tenion",
  "version": "1.2.3",
  "description": "An extension that allows you to donate NIM to content creators on the web.",
  "permissions": [
    "<all_urls>",
    "storage",
    "tabs",
    "activeTab",
    "idle"
  ],
  "background": {
    "scripts": [
      "libraries/bcrypt.js",
      "scripts/bgneeds/utils.js",
      "scripts/bgneeds/api_tokens.js",
      "scripts/bgneeds/storage.js",
      "scripts/bgneeds/special.js",
      "scripts/background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_popup": "pages/index.html",
    "default_icon": {
      "16": "images/icon16.png",
      "32": "images/icon32.png",
      "48": "images/icon48.png",
      "128": "images/icon128.png"
    }
  },
  "icons": {
    "16": "images/icon16.png",
    "32": "images/icon32.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "scripts/content_script.js"
      ],
      "run_at": "document_end"
    }
  ],
  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'"
}