PABLO: mark octants as "new for refinement" only if they are generated by a refinement #229

Job	Run time
Setup - Linux	10s
Windows (MSVC) - MPI OFF - Debug OFF	7m 9s
Windows (MSVC) - MPI ON - Debug OFF	10m 49s
Windows (MSVC) - MPI OFF - Debug ON	4m 6s
Windows (MSVC) - MPI ON - Debug ON	4m 35s
Linux (gcc) - MPI ON - Debug ON	17m 4s
Linux (gcc) - MPI ON - Debug OFF	6m 4s
Linux (gcc) - MPI OFF - Debug ON	10m 37s
Linux (gcc) - MPI OFF - Debug OFF	4m 17s
Linux (clang) - MPI ON - Debug OFF	5m 13s
	1h 10m 4s

Provide feedback