AccountModel : fix filterAcceptsRow for ContactMethod without Account
AccountModel : fix filterAcceptsRow for ContactMethod without Account

- When an Account is selected, a ContactMethod without any Account
set is never shown. Typically, a ContactMethod created but never
called doesn't have any Account set. With this patch, a ContactMethod
without Account set, will be shown whenever an Account selected. It
changes nothing when no Account is selected.

- in case of Person, we check if all his ContacMethods have no
Account, then we show the Person.

Change-Id: Ibeb0b81775c9ad98424fd02232c1aa533ed9a3ab
Reviewed-by: Guillaume Roguez <c893c3c233d1d66ba2b37888cbe8e58c0b98cee5@savoirfairelinux.com>

savoirfairelinux/ring-lrc,savoirfairelinux/ring-lrc,savoirfairelinux/ring-lrc,savoirfairelinux/ring-lrc,savoirfairelinux/ring-lrc