WooCommerce-ize URL detection

[szepeviktor]

• detect WooCommerce https://developer.woocommerce.com/docs/how-to-check-if-woocommerce-is-active/
• use a conditional tag https://developer.woocommerce.com/docs/conditional-tags-in-woocommerce/

🎁 a typo fix @tfirdaus

[tfirdaus]

Thanks @szepeviktor. It's an awesome PR and works great.

Theres' just a minor bug in:

wp-feature-flipper/app/Modules/Security.php

Lines 85 to 87 in 8b17c0d

	if (! URL::isLogin()) {
	return;
	}

The URL::isLogin() failed to identify the My Account as a page. I think because it's attached to init hook instead of wp. I can handle it after merging this PR.

[szepeviktor]

Glad to contribute.