#832 Remove exception from log line - was failing to do a __get__ on a NoneType.
#832 Rename datahandler to DBInterface
#832 Refactoring following renaming of datahandler to DBInterface
#832 Rename PGConnector to PostgresDBConnector
#832 Create new MongoDBConnector module
Move example config files into a subfolder.
Merge branch 'develop' into feature/#834_Convert_mongo_connector_module_to_class_inheriting_from_DBConnector_abstract_classes
#832 Initial set up of MongoDBConnector module.
#832 Add new MongoDBConnector class. This will gradually replace the current mongo_connector module.
#832 Add first method to the new class.
#832 Add new MongoDBConnector as an import to the DBInterface module.
#832 Add debug log lines so I can see whether the DB transaction has happened.
#832 Swap existing data connector implementation to new use new MongoDBConnector class.
#832 Add inheritance of DBAnalyticsConnector to MongoDBConnector.
Add method for storing analytics records in database.
#832 ADD add_analytics_record method to MongoDBConnector.
#832 Update DBInterface to use new MongoDBConnector.
#832 Add DBBlocksConnector ABC.
#832 Comment out unused methods.
#832 Comment out unused method.
#832 Add support for block functions into MongoDBConnector.