Estimations sum for Jira boards

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Estimations sum for Jira boards",
  "description": "This extension sums up the remaining time estimates shown in a scrum board of Jira",
  "version": "1.00",
  "short_name": "Jira Estimations Sum",
  "author": "Dirk Räbiger",
  "icons": {
    "128": "icon.png"
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/secure/RapidBoard.jspa?*",
        "https://*/secure/RapidBoard.jspa?*"
      ],
      "css": [
        "bootstrap.min.css",
        "estimates.css"
      ],
      "js": [
        "jquery.min.js",
        "estimates.js"
      ],
      "run_at": "document_end"
    }
  ]
}