Examine source code of ScriptFilter

{
  "manifest_version": 2,
  "name": "ScriptFilter",
  "version": "4.2resigned1",
  "author": "Baptiste Thémine",
  "homepage_url": "https://github.com/Baptistou/ScriptFilter",
  "description": "__MSG_@manifest_description__",
  "default_locale": "en",
  "permissions": [
    "<all_urls>",
    "contextMenus",
    "storage",
    "tabs",
    "webRequest",
    "webRequestBlocking"
  ],
  "icons": {
    "16": "images/icon16.png",
    "32": "images/icon32.png",
    "48": "images/icon48.png",
    "64": "images/icon64.png"
  },
  "background": {
    "scripts": [
      "functions.js",
      "webext.js",
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "ScriptFilter",
    "default_icon": "images/icon64.png"
  },
  "options_ui": {
    "page": "settings/index.html",
    "open_in_tab": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{1f7af7c8-a84a-4adf-a93e-7472f94bb691}"
    }
  }
}