Changes to Search Form Instances

removed the enum value completed from the query request parameter form_instance_status

removed the enum value disapproved from the query request parameter form_instance_status

removed the enum value draft from the query request parameter form_instance_status

removed the enum value draft_pending_review from the query request parameter form_instance_status

removed the enum value pending_review from the query request parameter form_instance_status

for the query request parameter form_instance_status, the type was generalized from string to array