Merge pull request #4601 from RosettaCommons/jadolfbr/fix_quench
Fix GlycanTreeModeler quench mode to pre-virtualize residues
This reduces bogus interactions of glycan trees that have yet to be modeled.
Also:
- Skip virtualization in ConvertRealToVirt mover if the residue is already virtualized.
- Remove an extra real to virtualize call in the modeler, which did nothing but very slightly increase run-time at each layer build.
@huxz