Gitignore to ignore JavaDB folder. DB scripts are enough to create local instances.
Removal of JavaDB files as they are not needed.
Little fix for JavaDB ignore.
SQL Scripts extended to create, flush and totally delete the required tables.
SQL statements adjusted to escape keywords (key and value are so matching for the purpose but they are also keywords. kinda sad)
Adding transaction-support for persistence.
Replaces multiple single SQL calls with transaction call in DAO