Flow dots count

[alminljajic]

adding the functionality to draw multiple dots for the flow, giving a slightly better feedback to the user. Reminds me of power flow visualizations in EV's or Hybrids.

Funny idea would be also to have the number of dots scaled accordingly by the flowrate computeIndividualFlowRate(), I might look into that as well in the future.

Let me know if you see any issues or anything else I should change, test whatever. I tested it roughly for the default obects like gid, home, solar. Not yet for batterry or individual etc.

[alminljajic]

Dont merge yet, it is causing some rendering issues which I cannot sort out. In sudden changes it scatters the dots even though duration and distance time between the dots is computed correctly and written correctly into the .

Any hints are welcome here.