Add member activity tracking

[tbeswick96]

• Add to personnel tab #147
• Visible to SR1, NCO+, Commanders
• Table layout showing:
  • Display name
  • Unit, unit role (if any)
  • Approved LOA timespan in past 4 weeks
  • Unapproved LOA timespan in past 4 weeks
  • Main ops attended in past 4 weeks (attended = 2+ hours)
  • Training attended in past 4 weeks (attended = 1+ hours)
  • Other ops attended in past 4 weeks (attended = 1+ hours)
• Colour code columns
  • 3+ weeks covered by LOAs red, 2+ yellow
  • 1 main op in past 4 weeks red, 2 yellow
• Click cell to view more data
  • Each LOA with reason
  • Exact time spent in ops, compared to server uptime
• Sorting
• Filter by name, unit
• Data could be processed at 3-6am each day, to reduce processing per request