Normalize genotype columns.
various fixes.

* add in known equivalents for self-reported and OMB races
* remove duplicate ezetimib property
* add new variant position properties
Update NA values and expand error message.
Add IDEA 12 prefs.
Add new columns from project 40 and ignore blank headers.
New columns and fix how unmatched columns are reported.
New columns for project 16.
Fix data bug.
Added code for parsing DNA file and properties for storing the found data.
Fix race reporting.

* don't show raw race data, show calculated fuzzy-matched race instead
* new method for finding a best-match race to display
* new Race enum
Various data format fixes.

* store "99" values as "NA" instead
* get rid of duplicate "DNA concentration" property
* alphabetize genotype bases for all rsid columns
Fix for time interval column.
More columns to skip number validation.

* these are time period columns and have mixed numbers and text