Patch refactor

A massive refactoring that takes out the EA-2 transforms and EA-2 contributor model and implements the Pojo-backed contributors and document-patch based QnADocuments.

1.  removes EA-2 seed data.  There is no new seed data in this project; there will be an alternate delivery method for seed data.
2.  Fixes issues #196 #171 #154 #149 #120
3. Database schema, ETL,  and Java changes to use POJO Facade #81 #79 
4. Use document patch for QnADocuments, remove database transforms not in uee #80 

Known changes -- 
1. database schema for contributors is now driven by POJOs, breaks from EA-2
2. database schame changes for qna documents changed in line with functional spec changes.
3. /v1/contributors is unauthenticated GET
4. change of "body" to "text" in  questiona and answers makes them render as blank.

Works against nightly build from 9/27/2014

Seed data here:
https://wiki.marklogic.com/download/attachments/31359376/seed-data1.2.tgz?api=v2  (updated for POJOFacade serialization bug)

Known issue with seed-data.. votes are not encoded properly for contributors. #209 (fixed)