Web Prank - replace the internet

manifest.json

{
  "background": {
    "scripts": [
      "jquery.js",
      "utils.js",
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "all_frames": true,
      "js": [
        "utils.js",
        "contentScripts.js"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "run_at": "document_start"
    }
  ],
  "description": "Replace words on webpages and prank your friends",
  "icons": {
    "128": "icon.png"
  },
  "manifest_version": 2,
  "name": "Web Prank - replace the internet",
  "short_name": "Web Prank",
  "browser_action": {
    "default_icon": {
      "19": "icon-19.png",
      "38": "icon-38.png"
    },
    "default_popup": "popup.html",
    "default_title": "set pranks"
  },
  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'; img-src http://static.kimonosoft.com/",
  "permissions": [
    "tabs",
    "http://*/*",
    "https://*/*",
    "webRequest",
    "webRequestBlocking",
    "webNavigation",
    "storage",
    "unlimitedStorage"
  ],
  "update_url": "https://clients2.google.com/service/update2/crx",
  "version": "1.6.0"
}