We've renamed customer short IDs to customer code

We've made some changes to make things clearer and more consistent. The "IDs" or "short IDs" for invoices, jobs, customers and payments are now called "codes". For example, what was previously called a "customer short ID" is now called a "customer code".

If you use these references in your templates, they'll continue to work as before, but we recommend updating them to use the new names.