rename efficiency to load

Link: https://github.com/GeneAssembly/biosal/issues/461
Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>
add Thorium prefix to transport lines

Link: https://github.com/GeneAssembly/biosal/issues/462
Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>