same PropertySheet.
- Renammed the meta_type & portal_type according to the naming convention.
  (Added a whitespace. Is it a good idea ? It might have some side effects)
- There wa too many helper methods in BankAccount :
  It might be a potential hazard to have the system automatically fill in the
  security keys. It is far more secure to have the user enter them manually,
  and then have the system doucle-check them.
  This can be accomplished in ERP5 through the use of Constraint.


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@5266 20353a03-c40f-0410-a6d1-a30d3c3de9de