Fixed bug in ChemGraph.toStringWithoutH() method
Fixed bug in ChemGraph.toStringWithoutH() method

If this method was called for H radical or H2, an empty string would
be returned.  Now, RMG checks the number of heavy atoms in the
chemgraph before calling the Graph.toStringWithoutCentralIDandH()
method.  If the # of heavy atoms equals zero, the
.toStringWithoutCentralID() method is called.  If not, the
.toStringWithoutCentralIDandH() method is called.

keceli/RMG-Java,nyee/RMG-Java,keceli/RMG-Java,jwallen/RMG-Java,enochd/RMG-Java,KEHANG/RMG-Java,keceli/RMG-Java,rwest/RMG-Java,KEHANG/RMG-Java,ReactionMechanismGenerator/RMG-Java,connie/RMG-Java,KEHANG/RMG-Java,KEHANG/RMG-Java,keceli/RMG-Java,keceli/RMG-Java,jwallen/RMG-Java,connie/RMG-Java,faribas/RMG-Java,connie/RMG-Java,nyee/RMG-Java,rwest/RMG-Java,connie/RMG-Java,connie/RMG-Java,nyee/RMG-Java,ReactionMechanismGenerator/RMG-Java,enochd/RMG-Java,jwallen/RMG-Java,enochd/RMG-Java,jwallen/RMG-Java,ReactionMechanismGenerator/RMG-Java,enochd/RMG-Java,keceli/RMG-Java,faribas/RMG-Java,jwallen/RMG-Java,rwest/RMG-Java,jwallen/RMG-Java,KEHANG/RMG-Java,nyee/RMG-Java,ReactionMechanismGenerator/RMG-Java,rwest/RMG-Java,nyee/RMG-Java,enochd/RMG-Java,faribas/RMG-Java,ReactionMechanismGenerator/RMG-Java,rwest/RMG-Java,nyee/RMG-Java,enochd/RMG-Java,KEHANG/RMG-Java,faribas/RMG-Java