D18762: Add support for portals in KRun

[Nathaniel Graham]

ngraham added reviewers: apol, dfaure, Frameworks.

REPOSITORY
  R241 KIO

REVISION DETAIL
  https://phabricator.kde.org/D18762

To: GeeXT, jgrulich, apol, dfaure, #frameworks
Cc: kde-frameworks-devel, michaelh, ngraham, bruns