fix dnet_resource_identifier generation
use of an extrafield to override the api compliance
- extrafields management- added a method to override the compliance
minor fix
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