Feature/l10n fixes

Fixes https://github.com/openlabs/nereid/issues/197
* Sharoon Thomas: " Re: [nereid] Feature/l10n fixes (#243)" (Sun, 21 Dec 2014
  22:08:45 -0800):

> >              if nereid_type not in cls.type.selection:
> >                  cls.type.selection.append(nereid_type)
> >  
> > +    @property
> > +    def unique_key(self):
> > +        if self.type in _nereid_types:
> > +            return (self.name, self.res_id, self.type, self.src)
> > +        super(Translation, self).unique_key()
> 
> return ?

This is indeed correct like it is, because otherwise it fails with from just my
memory soemthing like '... is not a callable'.

-- 

    Mathias Behrle
    PGP/GnuPG key availabable from any keyserver, ID: 0x8405BBF6