Examine source code of memosnagforquantum

{
  "title": "Memosnag",
  "name": "memosnag",
  "author": "Memosnag",
  "manifest_version": 2,
  "applications": {
    "gecko": {
      "id": "@Memosnag",
      "strict_min_version": "42.0"
    }
  },
  "requirements": {
    "sdk/window/utils": "sdk/window/utils",
    "sdk/windows": "sdk/windows",
    "sdk/notifications": "sdk/notifications"
  },
  "description": "memosnag is used to capture image and video data and urls and text from page.",
  "version": "1.0.1resigned1",
  "icons": {
    "48": "icons/logo_48.png",
    "128": "icons/logo_128.png"
  },
  "permissions": [
    "notifications",
    "*://*/*",
    "tabs",
    "contextMenus",
    "background",
    "<all_urls>",
    "storage",
    "management",
    "desktop-notification"
  ],
  "background": {
    "scripts": [
      "jquery-3.1.1.min.js",
      "context-menus.js"
    ]
  },
  "content_security_policy": "script-src 'self';object-src 'self';style-src 'self'",
  "browser_action": {
    "default_icon": {
      "16": "icons/logo_16.png",
      "32": "icons/logo_32.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "exclude_matches": [
        "https://*/memosnag/*",
        "https://www.memosnag.com/*",
        "https://*.memosnag.com/*",
        "http://*.memosnag.com/*",
        "http://*/memosnag/*"
      ],
      "js": [
        "jquery-3.1.1.min.js",
        "memosnagScript.js",
        "browser-icon.js"
      ],
      "css": [
        "memosnag.css"
      ],
      "all_frames": false
    }
  ]
}