Update bills.lang

Ligne 252 : Changement grammatical
- de "Paiements issue de l'acompte"
- en "Paiement issu de l'acompte"
Merge pull request #1821 from astebert/patch-1

Update bills.lang
Merge branch '3.6' of git@github.com:Dolibarr/dolibarr.git into 3.6
Add ref_ext into fetch product (else fetch and update set this column to
null)
Merge branch '3.6' of git@github.com:Dolibarr/dolibarr.git into 3.6
Merge branch '3.6' of git@github.com:Dolibarr/dolibarr.git into 3.6
Merge branch '3.6' of git@github.com:Dolibarr/dolibarr.git into 3.6
Fix: gidNumber ldap attribute was not defined i using posixGroup objectClass
Add hook for addMorButton into supplier card
Merge branch '3.6' of git@github.com:Dolibarr/dolibarr.git into 3.6
FIX: clone line extrafields value on quote, order and invoice
fix missing ","
Merge pull request #1921 from altairis-fr/clone_extra

FIX: clone line extrafields value on quote, order and invoice
Fix: Withdrawal total amount is double
Merge branch '3.6' of git@github.com:Dolibarr/dolibarr.git into 3.6
Fix web service category
Prepare 3.6.1
Prepare 3.6.1
Merge branch '3.6' of git@github.com:Dolibarr/dolibarr.git into 3.6
Fix: packager