Kill commented out taggedsubrecord.

Reinsert fk ids to subrecords with fieldnames.
Only pass complete extract criteria to the server.

refs openhealthcare/elcid#250
Merge branch 'master' into extract
Add Lookup list to field schema serializations.

refs openhealthcare/elcid#133 openhealthcare/elcid#134
Use lookup lists in extract interface.

refs openhealthcare/elcid#133 openhealthcare/elcid#134
Refactor Extractor to have methods for field types in query clauses.

Look up synonyms where appropriate.

refs #134
Allow the removal of incomplete query clauses.

refs openhealthcare/elcid#252
Set default for ft fields to '', add antimicrobial frequency migration.

refs openhealthcare/elcid#257