New (issued) invoice

Clicking on the New invoice button opens an empty form for a new issued invoice.

The New invoice form can be divided into the following sections:

1. Command line in new invoice with the title and command buttons
2. Issue header in new invoice with vital information about the document
3. Item lines in new invoice
4. General data in new invoice
5. Footer – Invoice value as a whole
6. Wizards in the New invoice