Cleaning code
Get all checks now doesn't show service checks
Change model hardware policy checks, fixed templates for nagios and updates images in doc
Merge https://github.com/tic-ull/arritranco

Conflicts:
	arritranco/monitoring/nagios/templates/nagios/hardware_checks.cfg
	arritranco/monitoring/nagios/templates/nagios/host_ext_info.cfg
	arritranco/monitoring/nagios/templates/nagios/hosts.cfg
	arritranco/monitoring/nagios/templates/nagios/service_checks.cfg
Fixed options in hardware checks can be blank and delete some useless files
Order nagios check by default by name
fixed hardware check
Filtering only up machines on hw policy checks.