[IMP] delivery, stock: group delivery slip packages

This commit makes it so if a delivery slip contains 1 or more packages
then move lines will be split by package (and non-package) groups with a
"section line" between them. This only applies to when a stock.picking
is 'State=Done'.

In order to accomodate complexity of splitting by package + grouping by
product unless printing serial numbers/lots + template inheritance,
reoccurring parts of the template are split into their own templates and
called. Relevant inheritance has been updated to match.

Additionally, picking.shipping_weight calculation has been updated so if
a pack.weight = 0 then calculation will default to the calculated
product weight. This prevents inconsistency between the "Total Weight"
at the top of the Delivery Slip and the package sections' displayed
weights. To distinguish which value is being used, package sections that
use the total product weight rather than the pack.weight have
"(estimated)" after it.

This completes subsection 3 of overall Improve delivery slip task.

Task: 2039720

0 files changed, 0 insertions, 0 deletions