Average Headway and total aggregated values

[LdDl]

PR contains code for calculation of average headway for given zone for specified period of time

• Updated Redis publisher
• Updated REST API
• New TrafficFlow
  • average headway
  • total intensity for all vehicle types
  • average speed across all vehicle types
  • total intensity for vehicles with defined speed
• New for statistics for classes:
  • intensity for vehicles with defined speed