Baloo Runner: Use X-Plasma-Request-Actions-Once property in service
Summary:
Because the actions are always the same the X-Plasma-Request-Actions-Once property can be set to true.
Depends on D29175.
Test Plan: Still displays action.
Reviewers: Plasma, meven, ngraham
Reviewed By: ngraham
Subscribers: plasma-devel
Tags: Plasma
Differential Revision: https://phabricator.kde.org/D29320