D26492: [KOpenWithDialog] Hide collapsible group box when all options inside are hidden

[Nathaniel Graham]

ngraham accepted this revision.
This revision is now accepted and ready to land.

REPOSITORY
  R241 KIO

REVISION DETAIL
  https://phabricator.kde.org/D26492

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