JSON OAC harvester working well.
Use super class self.url to hold harvesting url
Revert "Use super class self.url to hold harvesting url"

This reverts commit ce7920bddaf45daed473c0be8102542756657958.
Move OACHarvester to OAC_JSON_Harvester class.
OAC harvester works off of xml interface.
Change for new OAJ OAC jsong harvest type
Add "handle" to fetched OAC xml records
Fix how subelements are handled, concat text.

This is for the "snippet" tag that is inserted into the relation field.
data can be dict, in case of attribs with data in xml feed.
Now fields are lists only when mulit valued.
If image X or Y not integer, don't fail

also added some logging
Fix test files to match Collection Registry api data.

This makes the profiles work correctly with DPLA code.