make sure to use today in UTC timezone
move History class into db module
remove unused PUT_QUERY
remove default value for `Transaction.date`
Merge the History into the Database class
rename variables from history to database
Rename config option from history to database in the monolith section

Preserve BBB support for `history` until new deployments have been made
move Transactional mix-in into db module
Merge Transactional mix-in into Database class