Ask Everytime - limit site usage Firefox

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manifest.json
{
  "manifest_version": 2,
  "name": "Ask Everytime",
  "version": "6.5.4",
  "description": "Block addictive sites and enhance your productivity with 'Ask Everytime' - session limiter.",
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "browser_action": {
    "default_icon": "icon48.png",
    "default_title": "Ask Everytime - site usage limiter"
  },
  "permissions": [
    "storage",
    "notifications",
    "activeTab",
    "tabs",
    "contextMenus",
    "*://*/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "commands": {
    "toggle-blocking": {
      "suggested_key": {
        "default": "Ctrl+Shift+B"
      },
      "description": "Toggle site blocking on or off"
    }
  },
  "web_accessible_resources": [
    "icon.png",
    "styles/*.css"
  ],
  "omnibox": {
    "keyword": "block"
  },
  "applications": {
    "gecko": {
      "id": "{75d0c1c0-11f6-413a-82fb-038238b3d49d}"
    }
  },
  "content_security_policy": "script-src 'self'; object-src 'self';"
}

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