Fixed circular header problem with paper. A paper is like an experiment where it is abase for a measurement but
is not an experiment.
	modified:   experiments/SLAC-E155_NucDB.py
	modified:   include/NucDBExperiment.h
	modified:   include/NucDBManager.h
	modified:   src/NucDBManager.C
Fixed NucDBErrorBar::operator+ so that it adds the errors in quadrature
	modified:   experiments/CLAS/E93009_NucDB.py
	modified:   experiments/CLAS/E93009_summary.txt
        modified:   include/NucDBDataPoint.h
	modified:   src/NucDBDataPoint.C
Fixed typo
	modified:   experiments/CLAS/E93009_NucDB.py
	modified:   include/NucDBDataPoint.h