Merge pull request #6282 from RosettaCommons/roccomoretti/interactive_fix_nitro_issue
[Foldit] Fix reprotonation issue with nitro groups.
Nitro groups in library compound loading were having some issues with the reprotonation code, as there was some latent radical electron annotations being left on the atoms. Those aren't needed.
RELEASE NOTES: Fix bug where library compounds with nitro groups were being labeled as "not chemically feasible".