[FIX] l10n_de: din5008

In the din5008, there has been problem in the display of the paper format either
in the pdf or the preview.

In the preview we had a part of the page on the right that wasn't used caused by
the negative margin and the width of 180mm. But by removing that the pdf is
broken, the header is hiding some information.

To deal with that, we will add the width and negative margin only for the pdf
by adding a conditional css classes.

Also,it seems the footer with the company details can go out of page, by adding
a text-wrap on it, it solves this issue.

(In this commit, we override part of those commit:
https://github.com/odoo/odoo/commit/481f442f4ef176072edf3261415dbb06f8a3bc6f
https://github.com/odoo/odoo/commit/f7812ae848e0a79adcd11f936f6cd7890da00112

)

closes odoo/odoo#136293

X-original-commit: 96b09395
Signed-off-by: Florian Gilbert (flg) <flg@odoo.com>
Signed-off-by: Maximilien La Barre (malb) <malb@odoo.com>