Examine source code of 14 sun

{
  "manifest_version": 2,
  "name": "14 sun",
  "version": "2.0",
  "description": "* Saturday  : Prophet Mohammad\n* Sunday    : Imam Ali & Fatima Zahra\n* Monday    : Hasanain (Imam Hasan & Imam Hussain)\n* Tuesday   : Imam Sajjad & Imam Bagir & Imam Sadiq\n* Wednesday : Imam Kazim & Imam Reza & Imam Javad & Imam Hadi\n* Thursday  : Imam Hasan Askari\n* Friday    : Hojjat ibn al-Hasan (12th Imam)",
  "background": {
    "scripts": [
      "variables.js",
      "functions.js",
      "background.js"
    ],
    "persistent": true
  },
  "icons": {
    "32": "./img/icon/32.png",
    "64": "./img/icon/64.png"
  },
  "permissions": [
    "theme"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{395971dd-5553-4646-bd71-835e7a59b55d}"
    }
  }
}