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
Minor BugFix : Wrong variable reference in getNomUrl 

Display of Category Url was incompete due to reference to "$ref" instead of "$label"
Minor BugFix : Compatibility of function getNomUrl 

Using Ref & Label for Category Name display is necessary for compatibility
Missing Key for getNomUrl function
Missing Key for getNomUrl function
Minor BugFix : Missing thumbs folder in Category Images List

Sub-folder for thumbs was missing in category image list, url was wrong....
removed "thumb\" subdir addition 

Category Image Thumb sub-folder now directly added by function liste_photos
Avoid missing class error for fetch_thirdparty method
Not need to test if class exists with require_once
Fix: wrong function name
Add function dolEscapeXML
Merge branch '3.5' of git@github.com:Dolibarr/dolibarr.git into 3.5
Revert "Add function dolEscapeXML"

This reverts commit 756b1d31ad24a7908a875e180ebc7a759ef31311.
 Avoid missing class error for fetch_thirdparty method
Fix: Civility & birthdate wasn't save into adherent module
includes and show_documents
Fix extrafield from list feature where filter is provided
webservice Thirdparty parameter lastname for invidual creation is now
lastname and not ref
Missing trans key into resource module