[MERGE] sale, delivery: Improve the invoicing status followup

Purpose
=======

Improve some common usability issues coming from the invoicing followup.

Specification
=============

1. Sale: Rename 'Check/Set Price' buttons for more clarify
    relabel "Check price" -> "Get rate"
    relabel "Set Price" -> "Add to order"

2. Sale: Change the default invoicing method if there are downpayments
    Purpose
    -------
    Currently the default invoicing method is not very clear.

    Specification
    -------------
    Currently the result is not really correct. We can propose to deduct
    the down payment even if there are no down payments on the sales order.

    Now the option to deduct down payments will be selected if there
    is a downpayment line on the sales order and if there exists at
    least one invoice linked to the sales order that is not cancelled.

3. Delivery: Improve the SO invoice status
    Purpose
    -------
    If a SO is only containing lines for which the product is invoiced on
    the delivered quantity, the sales order is marked as 'Nothing to Invoice'.

    If I add a delivery line, the SO becomes 'To Invoice'. There is not really
    a use case in the real life where you will invoice the delivery fees before
    invoicing what has been really delivered.

    Specification
    -------------
    If an order:
    - contains delivery lines or downpayment lines
    - If the product on the other lines are invoiced on the delivered quantity
    - Nothing has been delivery or can be invoiced for theses lines

    Set the invoice status of the sales order to 'Nothing to invoice' instead
    of 'To Invoice'

4. Sale: Unlink the down payment on a SO if the invoice is unlinked
    Purpose
    -------
    When we create a downpayment line of SO and when we delete Invoice of downpayment then so line for downpayment is not deleted.

    Specification
    -------------
    Remove the downpayment line in the SO if the related invoice is deleted

Task ID :33126

0 files changed, 0 insertions, 0 deletions