Making sample id non-unique across studies
Fixing foreign key for sample id
Fixing populate test db to reflect changes on the db
fixing metadata template to support tha changes on the DB
Fixing qiita_db/commands
fixes #394
Fixing SQL isnerts on test_job
Fixing analysis to honor the sample id primary key
Now the hanlder is providing all the sample id information
Changing the tests to test over set, so order changes does not break the test
Merge pull request #436 from josenavas/non-unique-sample-ids

Making sample id non-unique across studies