Examine source code of Something Awful Last Read Redux

{
  "name": "Something Awful Last Read Redux",
  "version": "2.5.0",
  "manifest_version": 2,
  "key": "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC/ODZliWIb6YDyaHICQGfRDOiDmNOqCVPDNro6/Kwi1KpSFL7jI0Sn+HpvPt60Yb5tKPPMUIseTCSdDAjpr/d3aHU93r4g9ziq+wLKtTjuOryW/6izrGSf548A3QeyqIsWM+ONdbvOdU5bnXeAgIqa1CymocuJOASbvnz+ztaZXQIDAQAB",
  "description": "Enhances the Something Awful forums with a host of new and exciting features",
  "browser_specific_settings": {
    "gecko": {
      "id": "SomethingAwfulLastReadRedux@Firefox"
    }
  },
  "icons": {
    "16": "images/logo16.png",
    "32": "images/logo32.png",
    "48": "images/logo48.png",
    "128": "images/logo128.png"
  },
  "background": {
    "scripts": [
      "js/message-handler.js"
    ],
    "persistent": false
  },
  "options_ui": {
    "page": "settings.html",
    "open_in_tab": true
  },
  "content_scripts": [
    {
      "css": [
        "css/jquery-ui/jquery-ui.custom.css",
        "css/mouse-gestures.css",
        "css/quick-reply.css",
        "css/threadnotes.css",
        "css/timg-fix.css",
        "css/salr.css"
      ],
      "js": [
        "js/jquery/jquery-3.5.1.min.js",
        "js/jquery/jquery-migrate-3.3.1.min.js",
        "js/jquery/jquery-ui.js",
        "js/jquery/jquery.transform.min.js",
        "js/jquery/jquery.rightclick.js",
        "js/jquery/jquery.putCursorAtEnd.1.0.js",
        "js/bbcode.js",
        "js/util.js",
        "js/hotkey-manager.js",
        "js/mouse-gestures-controller.js",
        "js/quick-reply-emote-parser.js",
        "js/quick-reply-preview-parser.js",
        "js/quick-reply.js",
        "js/page-navigator.js",
        "js/post-history.js",
        "js/salr.js",
        "js/jquery/colorpicker.js",
        "js/background.js"
      ],
      "matches": [
        "*://forums.somethingawful.com/*"
      ],
      "run_at": "document_end"
    }
  ],
  "permissions": [
    "*://forums.somethingawful.com/*",
    "tabs",
    "storage",
    "unlimitedStorage"
  ],
  "optional_permissions": [
    "https://api.imgur.com/*",
    "https://api.twitter.com/*"
  ],
  "browser_action": {
    "default_icon": "images/logo16.png",
    "default_title": "Forum Jump List",
    "default_popup": "popup.html"
  },
  "web_accessible_resources": [
    "images/*.gif",
    "images/*.png",
    "imgur-upload.html",
    "images/emoticons/*",
    "js/jquery/jquery.min.map"
  ]
}