Renamed outer fields to match those in related queries.
Merge pull request #22 from deflaux/master

Updated bigquery-examples content for 1,000 genomes to current variants schema
Merge branch 'master' of https://github.com/googlegenomics/bigquery-examples
SQL simplications for shared variant queries.
Re-rendered data story with simplified queries.
Generalized allelic frequency queries to handle more than two alternates.

Also re-rendered relevant data story and removed some redundant IF statements.