Merge branch 'new-table' of https://github.com/ElDeveloper/qiita into issue_487
modifying the db and fixing tests
Merge branch 'master' of https://github.com/biocore/qiita into issue_487_db
changes to db schema
addressing @wasade comments: varchar values are not nullable, changed typo, and added boolean to define which one is active
Merge pull request #578 from antgonza/issue_487_db

Issue 487 db
Merge branch 'master' of git://github.com/biocore/qiita into issue-405
MAINT:Change ontology term identifier to bigserial

The term identifier in the ontology terms table was set as a big int,
thus adding new user-defined terms was cumbersome, with this change in
place those the term is now a bigserial.

I have also changed the ontology file in the beast, so people WILL HAVE
to reload their databases.
ENH: Change old_term_id to default to NULL
Merge pull request #581 from ElDeveloper/autoincrment-term

MAINT:Change ontology term identifier to bigserial
Merge branch 'master' of git://github.com/biocore/qiita into issue-405
ENH: _build_layout_and_init_db can load ontologies

This change was required in order to insert default user-defined terms
into the terms table.