Implementing LTU configuration retrieval from DAQ logbook (logbook_detectors table),

Implementing LTU configuration retrieval from DAQ logbook (logbook_detectors table),
to be read from the GRP preprocessor, and stored in the OCDB in /GRP/CTP/LTUConfig.
The validity of the object is [current_run, current_run], even if the entry committed
in AliRoot has infinite validity.
Only runs taken in global partitions will now be considered to fill the entry (a dummy
entry should be implemented as for the other CTP entries).