DBConfig - class for DB configuration
DB - create DB class skeleton
DB - add $debug property
DB - add debug setter
DB - add showDebug method
DB - add properties
DB - add constructor and destructor
DB - add call method for executing stored procedure
DB - add escape method
DB - add method for insert
DB - add methods for select
DB - add methods for delete
DB - add methods for update
DB - add methods for transaction support
DB - set date tag