Two dashboards for cores, slots, and runtimes

[IlyaBaburashvili]

Metrics-for-counting-slots-and-cores.json tracks dem_htcondor_slots_status_count, dem_htcondor_cores_count, dem_htcondor_cores_histogram, dem_htcondor_memory_count, dem_htcondor_memory_histogram metrics.

Runtimes-of-Transform-Logic-Engine-Publisher-Source.json tracks Transform, Logic Engine, Publisher, and Source.