Set the parent of the newly created instance in Atelier::newAtCoreInstance
Summary: Set the parent to to be safe
Reviewers: laysrodrigues, tcanabrava, patrickelectric
Reviewed By: laysrodrigues, patrickelectric
Subscribers: Atelier: General Development
Tags: Atelier: General Development
Differential Revision: https://phabricator.kde.org/D16854