Swiss bank statements import

This module adds several import types to the module account_statement_base_import, in order to read swiss bank statements. It currently supports the following file formats :

• .v11, .esr, .bvr formats (ESR standard) for records of type 3 (type 4 is ready to be implemented)
• .g11 format from Postfinance S.A. for Direct Debit records of type 2
• XML format from Postfinance S.A.
• .csv format from Raiffeisen Bank
• .csv format from UBS Bank [CH-FR]

Warning : this module requires the python library 'xlrd'.