Feature/grafana dashboard

Added grafana to obtain dashboards per host.
Dashboards are generated automatically.

It is linked with hosts in multisite, at the bottom of the host description.

E.g.: http://monit.inet/check_mk/view.py?host=m2m_client.com&view_name=hoststatus&selection=2b908f99-2107-4266-8433-30bbf9808ec8&site=