[ADD] account_auto_fy_sequence
[IMP] account_auto_fy_sequence: add fr translation
[IMP] account_auto_fy_sequence: update sequence view to add %(fy)s in legend
[FIX] account_auto_fy_sequence: pep8
[FIX] account_auto_fy_sequence: spelling
[IMP] auto_fy_sequence: refactor for readability
[FIX] account_auto_fy_sequence: correct behaviour in presence of
multiple sequences to choose from
[IMP] account_auto_fy_sequence: check that the sequence has not been used...

when changing from %(year)s to %(fy)s on an existing sequence.
Merge pull request #71 from acsone/7.0-account_auto_fy_sequence-sbi

[ADD] 7.0 account_auto_fy_sequence