o2online.de improvements

Disables a few options of o2online.de
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manifest.json
{
  "manifest_version": 2,
  "name": "o2online.de improvements",
  "version": "1.0.2resigned1",
  "description": "Disables a few options of o2online.de",
  "content_scripts": [
    {
      "matches": [
        "*://www.o2online.de/ecare-prepaid/",
        "*://www.o2online.de/ecare-prepaid/uebersicht",
        "*://www.o2online.de/ecare-prepaid/aufladen-uebersicht"
      ],
      "js": [
        "improvements.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{b3f36cba-a81d-4888-bfd9-958a5cc275f3}"
    }
  }
}