deleted 2 fields are no longer needed in the model
rearranged fields in Chip Result inline.
Added AssayResultFunction model to specify analysis method used to convert readouts to results.
Fixed bug in definition of AssayResultFunctionAdmin
Deleted fields from AssayTestResult that are now in the inline AssayResult model
Added assay_name to the change form in AssayTestResults
Added ResultFunctions to Chip Results, and Admin Home page
Deleted AssayTest model
Changed PlateResults Assay link to AssayModel instead of findings.  Rearranged the fields on the change form.
Removed Findings and Finding types
Cleaned code, removing sections that had been commented out for removal.