previously planned as 0.86

Tools improvements

Related issues
	Feature #681: Nouvelles fonctionalités bases de connaissances
	Feature #682: Extraction de la base de connaissance au format PDF
	Feature #869: Ajout image dans knowbase
	Feature #1002: Valideurs pour les demandes de reservations.
	Feature #1028: Associate more than one category to an KB or FAQ item
	Feature #1039: Add other criterias in view tab of reservation
	Feature #1219: User timezone
	Feature #1314: Copy an item
	Feature #1323: Lien matériel / knowbase
	Feature #2275: Add history for KB
	Feature #2539: Ajout tags pour la KB
	Feature #2664: New notification for reservation
	Feature #4573: Integration of DHCP field inside NetworkPort
	Feature #4577: Massive action : show directly the action when there is only one
	Feature #4654: Renewal management for contracts