Implemented SavingsRDB.getSavingsAccountCount()

Signed-off-by: Peter <s3286430@student.rmit.edu.au>
 - Fixes to main client application
 - CustomerRDB DAO now uses setDate instead of setString

Signed-off-by: Peter <s3286430@student.rmit.edu.au>
 - Various fixes to error messages

Signed-off-by: Peter <s3286430@student.rmit.edu.au>
Merge branch 'master' of https://github.com/peterpavloman/COSC2353_Bank