Reconfigured license header.

gradle.properties

 version=1.0
 
 license=https://cecill.info/licences/Licence_CeCILL-B_V1-fr.html
-netbeans.license=cecill-b
+netbeans.license=licenseheader.txt
 
 org.gradle.warning.mode=all
\ No newline at end of file

licenseheader.txt

+${licenseFirst!""}
+${licensePrefix}CONTRAT DE LICENCE DE LOGICIEL LIBRE CECILL-B
+${licensePrefix}https://cecill.info/licences/Licence_CeCILL-B_V1-fr.html
+${licenseLast!""}
\ No newline at end of file