Allow our bio tools to be used for local bio-chopping by not mandating a bio_from value.  bio_to is still mandated (mostly for debuggign) and shall be copied from the parent bio.
Allow our bio tools to be used for local bio-chopping by not mandating
a bio_from value.  bio_to is still mandated (mostly for debuggign) and
shall be copied from the parent bio.

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase