Examine source code of SCIBASE

{
  "name": "SCIBASE",
  "description": "Import Your LinkedIn Profile to Your SciBase Profile",
  "version": "0.52resigned1",
  "content_security_policy": "default-src 'self';  connect-src *",
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon.png"
  },
  "applications": {
    "gecko": {
      "id": "scibasev1@mozilla.org",
      "strict_min_version": "45.0"
    }
  },
  "permissions": [
    "storage",
    "tabs",
    "webNavigation",
    "http://*/*",
    "https://*/*"
  ],
  "background": {
    "scripts": [
      "lib/jquery-3.1.1.min.js",
      "background.js",
      "eventPage.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*",
        "https://www.linkedin.com/*"
      ],
      "js": [
        "lib/jquery-3.1.1.min.js",
        "content.js"
      ]
    }
  ],
  "browser_action": {
    "default_title": "SciBase Button",
    "default_icon": "icon.png",
    "default_popup": "popup.html"
  },
  "manifest_version": 2
}