Fix issue unrelated to this change :)
#846 Migration script for users from Mongo to Postgres.
#846 Switch add pushover token to PG from Mongo.
#846 Remove the add pushover token function, which is now dead I believe.
#846 New method in PostgresDBConnector to remove the need for Mongo.
#846 Move all Pushover functions to PostgreSQL
Remove Pushover functions from MongoDBConnector
#846 Update SQL script to include firstname, surname on users table
#846 Update Migrate_Registrations so that it adds names to users table if appropriate
#846 Remove add_transaction_record from MongoDBConnector
#846 Remove add_analytics_record from MongoDBConnector
#846 Stop calling MongoDBConnector for adding block records
#846 Add some TODOs...
#846 Move get_count_of_blocks_for_blockee to PostgreSQL
#846 Move remove_blocks and remove_move_request to PostgreSQL
#846 Remove add_move_request from MongoDB
#846 Move get_open_move_requests to PostgreSQL
#846 Move Remove_registration to PostgreSQL
#846 Remove BBDatabaseAccess to BbDbInterface
Call remove_registration on PostgreSQL instead of MongoDB
#846 Rename BBDatabaseAccess throughout app
#846 Remove get_list_of_blocks_for_blockee from MongoDB