Update and rename RMG_Observations_minimum.py to RMG_set_machine_counts.py

Please create me a new empty RMG_Obsrevations_minimum.py file in the repo.  Run this one to see the interactive web interface. The json file that it generates tells us
1. How many machines under observation each group has
2. Who was the operator of each machine last time an observation was done.
Merge branch 'patch-10' of https://github.com/cclauss/RMG-Observations