[FIX] partner: backport of trunk revision 4882

When adding a new contact or a new company based from the partner form, use the customer value as default value (was doign it only for the supplier flag)
[MERGE] [FIX] [FIX] When adding a new contact or a new company based from the partner form, use the customer value as default value (was doign it only for the supplier flag)

backport of trunk revision 4882 (opw 587764)