Restore Youtube Dislikes and the IMDB forums

Restores dislikes for all Youtube videos and also puts the forums back onto IMDb with all of the old posts restored. Chrome version available: https://chrome.google.com/webstore/detail/imdb-forum-addon-and-yout/bjpibnbhmpgnidoomlohpolhddbjkogi

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manifest.json

{
  "manifest_version": 2,
  "name": "YouTube Dislike and IMDb forum restorer",
  "description": "Restores forums to IMDb and you can continue posting to them on filmboards.com and restores dislike counts for YouTube videos",
  "version": "1.17",
  "permissions": [
    "*://*.filmboards.com/*",
    "*://*.youtube.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "http://www.imdb.com/title/*",
        "https://www.imdb.com/title/*",
        "http://www.imdb.com/name/*",
        "https://www.imdb.com/name/*",
        "http://m.imdb.com/title/*",
        "https://m.imdb.com/title/*",
        "http://m.imdb.com/name/*",
        "https://m.imdb.com/name/*",
        "*://*.youtube.com/*"
      ],
      "css": [
        "board.css"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ]
}