Before beginning:
User must have permission to create invoices
Steps:
1. Open the invoices app from the menu bar
2. Click "new"
3. Fill out all required fields and any other desired information
4. Click "Save & close"
Expected results:
Invoice is created successfully
Create invoice form dismissed
User is shown view of new invoice in three pane layout
A pop-up message indicating that the invoice has successfully been saved appears
