Updated the instance manager to use the JSON encoder supplied by Paasmaker, to get around issues encoding dates and other types.
Updated the instance manager to use the JSON encoder supplied by Paasmaker, to get around issues encoding dates and other types.

kaze/paasmaker,kaze/paasmaker,kaze/paasmaker,kaze/paasmaker,paasmaker/paasmaker,kaze/paasmaker,paasmaker/paasmaker,paasmaker/paasmaker,paasmaker/paasmaker,paasmaker/paasmaker