account_invoice_entry_date: method action_move_create: incorrect signature

[Leonardo Pistone]

The action_move_create method has the following incorrect signature:
    def action_move_create(self, cr, uid, ids, *args):

There are no keyword arguments. The effect is that if you try to pass a context to it, you get:

TypeError: action_move_create() got an unexpected keyword argument 'context'"

The original signature from addons/7.0/account/account_invoice.py is:

    def action_move_create(self, cr, uid, ids, context=None):

Same signature on v6.1.

We should use that one in account_invoice_entry_date as well.