Kickoff computer tab : don't display filepath for places in description

Summary:
The path of places is not very informative to users
Follow the path of D26121

Test Plan:

Reviewers: ngraham, Plasma, VDG, hein

Reviewed By: ngraham, Plasma, VDG, hein

Subscribers: hein, plasma-devel

Tags: Plasma

Differential Revision: https://phabricator.kde.org/D26147