Added delete_ URL for Production Type
Minor
Added OutputSettings link back to Scneario so that they'll be exported together.
Population added to the database so we can import files.
Rebuilt the database.
Population Form added.  source_file made generic CharField so Django doesn't try to copy and save the raw file.
Saving a new Scenario: File and database creation are working.  It's not traversing the full tree for dependencies.
Buttons for open and save.  I'm having trouble with layout.
Layout done for Open and Save.
Merge branch 'master' of https://github.com/NAVADMC/SpreadModel