{
  "manifest_version": 2,

  "name": "Read Comments",
  "description": "Read all comments from the current forum",
  "version": "0.0.2",

  "content_scripts": [{
    "matches": ["https://siglo21.epic-sam.net/*", "*://localhost/*"],
    "run_at": "document_start",
    "js": ["content.js"]
  }],

  "permissions": [
    "storage",
    "unlimitedStorage"
  ],

  "options_page": "configs.html",

  "web_accessible_resources": ["content.js", "injected.js"]
}

{
  "manifest_version": 2,

  "name": "Read Comments",
  "description": "Read all comments from the current forum",
  "version": "0.0.2",

  "content_scripts": [{
    "matches": ["https://siglo21.epic-sam.net/*"],
    "run_at": "document_start",
    "js": ["content.js"]
  }],

  "permissions": [
    "storage",
    "unlimitedStorage"
  ],

  "options_page": "configs.html",

  "web_accessible_resources": ["content.js", "injected.js"]
}

Remove localhost from content_script matches.
Remove localhost from content_script matches.
