Fixed proses_transaksi on Kasir
Some overhaul in DataModel and ServiceBO/ServiceFO Class
Added a redundant definition of JPA Persistence + Hibernate in Spring Servlet Context
Changed HBM2DDL to Validate Mode (Only check database validity, not creating it)
Added jackson-hibernate and HibernateAwareObjectMapper to accomodate Jackson JSON serialization in LazyLoading JPA class