Added logging statements
removed logging statements for debugging
commented out logging statements for debugging
Logfile with logging starting from 
extendCentralDogma() method call, first pass on single protein nodes.
Version with logging statements for convertPathway() commented out. For
debugging extendCentralDogmaNodes().
Log with additional statements in extendCD() section
Edited logging statements
comments in unit test
Added more logging statements for debugging
Log file with latest logging for debugging extendCentralDogma() section