Merge pull request #2205 from RosettaCommons/guffysl/setup_metals_mover
Added SetupMetalsMover, which provides auto_setup_metals functionality in mover form. In addition to the normal command line options for auto_setup_metals (which default to the command line values), this mover takes as attributes an optional selector or resnum list to specify which metal(s) should be set up and an option to only add constraints and not chemical bonds/patches (useful for reapplying constraints if they are removed during a protocol).