Connect in instance
Summary:
- Connect toolbar for atcore instance
- closeable tabs if more then one tab open
- atcore is stoped if a tab is closed.
Test Plan: Apply it with arc. Creating extra instances will fail unless you use the D10786 with this.
Reviewers: patrickelectric, tcanabrava, laysrodrigues
Reviewed By: patrickelectric, laysrodrigues
Subscribers: Atelier: General Development
Tags: Atelier: General Development
Differential Revision: https://phabricator.kde.org/D11476