BondGraphFileName.empty() could not be used as a check, as was set to "" instead of "\n"
if (finally) done so, we have to remove the empty molecule that we parsed in
... and then pick the newly added molecule for mol to point at
SaveConfig() did not set the merged molecule name correctly.
if empty config is given, the empty molecule now receives the ConfigFileName as name
FIXES to config.cpp
Load() did not set the name of the molecule
changes to tesselationhelper.cpp and tesselation.cpp
WriteTecplotFile() uses N == -1 to make clear, that we are writing the final not a temporary tecplot file and then uses the molecule's name instead of the last triangle's endpoints