Added PDF and Rel Functions to the nav panel.  Removed Protocol sub-categories.
Made the nav panel text smaller.
Working on converting to FormSets.  Initial data still not working
Added uniqueness constraint for Transaction tables.  You can't assign more than one reaction to a production type or have two DiseaseSpreadModel for the same pairing.
FormSet (for DiseaseReactionAssignment) is pre-populated with existing assignments and it detects and fills in missing assignments with a blank form with production type filled in.
Corrected FormSet template for proper saving.
Added Nav Status for other assignments
Added ProtocolAssignment to the FormSet party.
Created migration in honor of Neil.  Reactions and Protocols assigned to ProductionTypes can be null.
DiseaseSpread assignment turned into a FormSet
DiseaseSpread assignment turned into a FormSet
Fixed 2 bugs.  No Reaction string default.  Blank form refresh.
Merge remote-tracking branch 'origin/master'

Conflicts:
	ScenarioCreator/views.py
Reset:  Fixed 2 bugs.  No Reaction string default.  Blank form refresh.
Merge branch 'master' into SQLite