D24703: Port (most of) KSslInfoDialog from KSslError to QSslError

[Volker Krause]

vkrause added a task: T11620: Port from KSslError to QSslError.

REPOSITORY
  R241 KIO

REVISION DETAIL
  https://phabricator.kde.org/D24703

To: vkrause
Cc: kde-frameworks-devel, LeGast00n, GB_2, michaelh, ngraham, bruns