Merge pull request #2041 from RosettaCommons/jadolfbr/ccd_ends_small_loops
This special cases small loops so that they are not included in the CCD arms in GraftMovers located in protocols/grafting. For example, a loop that is 4 residues that you are inserting with 2 residue flexibility on either side will fail. This changes the insert flexibility where needed so things won't fail. A warning is given for 1 residue insertions.