Merge pull request #3980 from RosettaCommons/JWLabonte/PTMs/cofactors
Coenzymes: Adding ATP to the Rosetta database by default
This merge adds a `.params` file for ATP so that Rosetta will load structures with ATP correctly. The current parameters it pulls from the PDB have Hs on all the phosphates, and this is silly.
Anyone using ATP-bound structures will see changes in their results.
All integration test changes are expected; all unit tests pass.