Do not pass redundant argument to superclass init.
Make abstract methods raise NotImplementedError.
Rudimentary unit tests for DataStore.
Merge pull request #792 from Renelvon/fix_bad_arg

Fix node not starting.
Make WHERE clause optional for SQL UPDATE calls

Amend obdb.updateEntries to allow for WHERE clause to be optional.
Include style fixups for node/db_store.py
Merge pull request #772 from freamon/amend_db_update_entries

Make WHERE clause optional for SQL UPDATE calls