Add perfdata to host status view
Maintain lines for warning/critical DS in graphs ...
Add hostgroup configuration for Shinken

Needed for alternate UI (WebUI / Thruk) and for mail notification.
Entity is used as an hostgroup.
Missing file in previous commit (Add perfdata ...)
Merge branch 'glpi0.84' of https://github.com/ddurieux/glpi_monitoring into glpi0.84
Glpi home page improvements

Display hosts status and components catalogs in tabs on home page
Fix #21 : entities managed in components catalogs view
Minor fixes ...
Fix Shinken Web Service for hostgroups
Add Shinken hosts/services UI attributes

Very useful for Shinken WebUI / PNP, Thruk ... defining icon_set and
action_url attributes
Fix #22 : specific query for passive only hosts
custom_view parameter for Shinken hosts
Merge pull request #20 from mohierf/glpi0.84

Glpi0.84 - new pull request including new features