fixed a bug (IndexOutOfBoundException with ds with 0 params)
other logs
added logs
log levels
added the implementation of method findNextScheduledExecution, see #567
reapply of the patch on country fields
reapply of the patch on registeredBy field
SCRIPT_COMMENT: fixed deploy.info file to the module dnet-openaireplus-datasource-manager-service
SCRIPT_COMMENT: Added deploy.info file to the module dnet-openaireplus-datasource-manager-service