Deleting the database on startup because components that fail to start
are not stopped, and this can lead to duplicate accounting entries as
the transactions are reloaded into an existing database.
Incompatible change: Accounts are now referenced by keyword (db/ident)
rather than by id. This simplifies the code and makes it easier to
reference accounts. Also, the entity/type scheme up to now has not
always suited some accounts. It is far simpler if accounts are all the
same, and are not distinguished by type.