When we get the existing tags to append them a new id, we don't get a
list of id but a list of tuple with one id, this only append if you have
more than one accounting of these country installed, as the first time
it will return an empty list. So the command sent to the ORM, is not
built correctly.
To fix this we just append commands '4' that will be append in a list.
Before this rev. one could set the report layout on the company using a
hardcoded list (background, clean, standard, etc.). Other modules (typically
accounting modules) could add options in this list. The used template was built
on the layout key.
Now, the layout is a many2one field to a newly created model `report.layout`,
which is linked to a view with the layout architecture.
This gives more control to customize reports and create a new layout (without
creating a python module that extend the layout selection).
When invoicing a line with an account that has a tax, ensure that line has the same tax of accounts. This is required by DATEV and is common usage in Germany
Was task 35289
Was PR #25202
* CoA up to date
* Taxes up to date
* SKR03 installed by default but users can easily switch to SKR04 while no accounting entries exists for the company
* removed unneeded things
* set tags accordingly on accounts and taxes for the reports to work (new reports in enterprise)
Was task 31826. Was PR #17447. Discussion related on #18571
Toufik Benjaa