Updates for Grafana 11
Removed dashboard rate_monitor as it is deprecated.
Many improvements in the ratemon, muon_rate_monitor and trigger_rates.json.
Small changes in overview.json and subsystem_monitoring.json
Removed dashboard rate_monitor as it is deprecated.
Many improvements in the ratemon, muon_rate_monitor and trigger_rates.json.
Small changes in overview.json and subsystem_monitoring.json