Update unavailability to calculate it (optimizations)
Fix dynamic services catalog and entities
Fix search for number of processor in computer list
FIx to not calculate unavaibility when drow graph (because can use ressources), so calculate unavaibility only in cron task
Merge branch 'glpi0.84' of https://github.com/ddurieux/glpi_monitoring into glpi0.84

Conflicts:
	inc/unavailability.class.php