Fixed crash when bibsched queue is empty and we turn on bibsched daemon from bibsched monitor. Added trick to register in bibsched.log the exiting of a task.
Fixed crash when bibsched queue is empty and we turn on bibsched daemon from bibsched monitor.
Added trick to register in bibsched.log the exiting of a task.

inveniosoftware/invenio,inveniosoftware/invenio,tiborsimko/invenio,tiborsimko/invenio