Merge pull request #823 from RosettaCommons/roccomoretti/fix_dna
Fix for dna_interface_design test
Convert the debug_assert() which is failing to an if(){ utility_exit_with_message() }, with extra debugging output to (possibly) assist users, and increased output levels on dna_interface_design integration test.
Also, fix the underlying issue with the triazolamerN patch, which is related to deleting the H atom when it's used for the internal coordinates of the base residues types. Instead, just make the H virtual, like N. This may or may not be the long-term fix for this patch.