Reorganize directory structure

[bertysentry]

hardware-sentry vs hardware vs metricshub?

[MarcDouguedroit]

New directory structure, including new name for the hardware dashboards:

Hardware

• Hardware Main (MetricsHub).json
• Hardware Site (MetricsHub).json
• Hardware Host (MetricsHub).json
• Hardware Main (Hardware Sentry).json
• Hardware Site (Hardware Sentry).json
• Hardware Host (Hardware Sentry).json

System

• Windows.json
• Linux.json