Fix: regression, the product discount overwrites the default customer
discount !
Fix: hide blocs with multi-page
Fix: wrong hidden
Merge pull request #682 from FHenry/3.3

Fix bug #730
Fix: pdf models are unstable and time consuming.
Merge branch '3.3' of git+ssh://git@github.com/Dolibarr/dolibarr.git into 3.3
Merge branch '3.3' of https://github.com/Dolibarr/dolibarr.git into 3.3