Merge pull request #5761 from RosettaCommons/roccomoretti/interactive_address_waterbuilder_crashes
[Foldit] Attempt to address issues with LK_Ball crashes.
We're seeing a fair number of crashes with Stub building in LK_Ball evaluation in the ligand design puzzles. Best I can tell from the traceback, this is happening due to coincident atoms. Adjust the LKBall and Stub code to be more robust to these sorts of situations. (This may result in non-ideal energies for the system, but it won't cause the client to crash.)
RELEASE NOTES:
* Address crashes in scoring for ligand design puzzles.