v1.12.2, no fatal error with WooCommerce deactivated

Fixed

• No fatal error with WooCommerce deactivated. The Antifraud menu stayed registered while WooCommerce was inactive, and the Activity Log and Reports tabs crashed on wc_get_order(). The admin screens and custom order statuses now load only when WooCommerce is active; the "requires WooCommerce" notice still shows and updates still arrive. Found during QA by @szczepaniakmateusz59-del (#13).

Full details in CHANGELOG.md.