D14006: Fix WebDAV destination header on COPY and MOVE operations

[Nathaniel Graham]

ngraham added reviewers: Frameworks, Dolphin.

REPOSITORY
  R241 KIO

REVISION DETAIL
  https://phabricator.kde.org/D14006

To: dantti, dfaure, #frameworks, #dolphin
Cc: ngraham, kde-frameworks-devel, michaelh, bruns