Merge pull request #1855 from RosettaCommons/jadolfbr/random_start
This changes the default of Glycan Relax to randomly sample on each dihedral of each glycan in order to start with a random conformation of the glycans (including any AA-glycan linkage torsions which are technically part of the glycan). This has been shown to improve model diversity and enrich for low-energy models.
-Removes the sugar_bb_start option, which is not really used, sans for the initial testing.
-Adds a 'refine' option, which turns the starting sampling off and keeps the starting conformation of the glycans passed in. We can then use this option down the line to further 'refinement-specific' code.