Database clean up

-Add depository.py and training.py for new reaction families.
-Add many histories to entries using git blame
-Add duplicate=True to one reaction in OxygenSingTrip.py
-removed Sulfur/thiophene kinetic library. There is a mistake in the
library (probably an improperly copied adjlist) and the original authors could
not remember what is correct. We elected to just remove it from official
seeing as nobody in the group uses it.