Logs improvements, performance boost and web font update

Explore our newest Zapiet - Rates by Zip Code updates 👇👀

• We have added the ability to show delivery zone name on the logs page.
• We have improved the performance of the partial postcode matching method.
• We have changed the web font to match Shopify Polaris 12 guidelines.
• We have removed the additional save button at the button of the settings page.