Examine source code of Picket

{
  "name": "Picket",
  "version": "0.0.3",
  "description": "Collective bargaining for netizens",
  "manifest_version": 2,
  "background": {
    "scripts": [
      "picket.js"
    ],
    "persistent": true
  },
  "applications": {
    "gecko": {
      "id": "picket@izens.net"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "picket@izens.net"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "run_at": "document_start",
      "js": [
        "banner.js"
      ]
    },
    {
      "matches": [
        "*://izens.net/*"
      ],
      "run_at": "document_start",
      "js": [
        "campaignLinks.js"
      ]
    }
  ],
  "permissions": [
    "storage",
    "webRequest",
    "webRequestBlocking",
    "<all_urls>",
    "alarms"
  ],
  "browser_action": {
    "default_popup": "popup.html"
  },
  "web_accessible_resources": [
    "blocked.html",
    "custom.css",
    "normalize.css",
    "skeleton.css"
  ]
}