Transaction (not exactly an issue, just possible improvements)

[ogarmpis]

Single Transaction is implemented without JdbcTemplate, but with simple Jdbc Prepared Statements, manually. I could not figure out how to use "transactional" annotation or TransactionTemplates (mostly due to spring.xml beans configuration, something we do not use). If anyone wants to try make it better, using the above ways and keeping JdbcTemplate, you are welcome!