Cherry pick from LP branch
Removed module account_statement_base_import which is in another branch.
Add bvr ref generation if account is IBAN for LSV
PEP8 fixes. Add postfinance setup description into module description.
Add banking dependency in .travis
Fixed banking dependency in .travis
[ADD] LSV-DD description in README.md
[ADD] unidecode install in .travis
[ADD]tests
[FIX] pylint errors
Merge pull request #37 from CompassionCH/7.0-lsv-dd

LSV and Postfinance Direct Debit file generation