added search string parsing
move search to qiita_db, flesh it out
add tests
pep8 fix
added documentation
clarify a bit of documentation
fix pep8 on base_handlers.py
added return of metadata fields
fix documentation error
adding sugestions by @adamrp and @wasade
return sample metadata info with results
update docstrings for new change
pep8 fixes
implementing @adamrp suggestions
make test not rely on order of a set
move required_cols variable for testing
move imports in test so happen after schema creation
move import again
move setting of the required_cols variable
move import in test_search