add mysql connector dependency
add HibernateUtil
add hibernate cfg and implement ClientDaoHibImpl+Test
edit ClientDaoHib
create InitTestData class
edit accounts.jsp
validate Account
implement AccountDaoHib
add dependency org.jadira.usertype
create TransactionDaoHibImpl
add transactions to InitTestData
allow null for Sender and  Reciver of Transaction
Merge pull request #17 from iipolovinkin/useHibernate

Use hibernate