Fix: [ bug #947 ] Can't create proposal lines with unit price = 0
Fixed es_ES translation typo
Merge pull request #1058 from marcosgdf/bug-947

Fix: [ bug #947 ] Can't create proposal lines with unit price = 0
Merge pull request #1059 from marcosgdf/translations

Fixed es_ES translation typo
Merge pull request #1060 from FHenry/3.3

Fix trad holidays module
Prepare 3.3.3
Fix: warning not always visible. Depends if addon modules were
installed. Var should provide a quick fix.
Fix bug pgsql : add mail directly into mailling