NotYetTagged label for Content nodes
Merge branch 'dev' into spidercrab
Merge branch 'ocean_don_corleone' into spidercrab
Refactor: spidercrab_slaves and worker_id

spidercrab_slaves -> spidercrab_slave
worker_id -> graph_worker_id
Change option name in ocean_exemplary_data.py
Minor refactor
Catching more exceptions in Spidercrab
Merge branch 'dev' into spidercrab
Spidercrab _check_and_pull_config() from Corleone
Merge branch 'ocean_don_corleone' into spidercrab
Merge branch 'ocean_don_corleone' into spidercrab
Merge branch 'ocean_don_corleone' into spidercrab
Pass node_id to get_running_service and test
Batch mode in ocean_exemplary_data.py

Part of issue #104
Prepare a database with data

Add information in READMEs about database data files location. This
commit is related to issue #104.
Refactor function name....