Examine source code of modals for github project

{
  "applications": {
    "gecko": {
      "id": "alex.falcucci@gmail.com",
      "strict_min_version": "42.0"
    }
  },
  "manifest_version": 2,
  "name": "Github projects trello like cards",
  "short_name": "Githublo",
  "version": "1.5resigned1",
  "description": "Change the cards in github to match trello's workflow. 1 click will open the card itself and 2 will forward to the normal page.",
  "permissions": [
    "storage",
    "contextMenus"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://github.com/*/projects/*"
      ],
      "js": [
        "lib/jquery-3.1.0.min.js",
        "lib/jquery.modal.min.js",
        "gitlo.js"
      ],
      "css": [
        "css/window.css",
        "css/jquery.modal.min.css"
      ],
      "run_at": "document_end"
    }
  ],
  "options_page": "ui/settings.html"
}