More cleanup of LinkTaskManagers and transcoders

refs #4757

Removing commented out code, unused imports, fixing some print
statements, clarify tuple unpacking, split long and confusing lines
into multiple lines, etc.
Normalization works with FPR v2 API

refs #5575

Updated Normalization code to use the new FPR model, first pass.

Database calls to Commands and CommandRelationships have been replaced
with fpr_fpcommand and fpr_fprule, CommandRelationship has been
replaced with FPRule, CommandClassifications replaced with
fpr_fprule.purpose.  DefaultCommandsForClassifications not yet update.
FPR admin revision updated for related changes.

Misc code cleanup and simplification.