Provide option to hide menu bar for Ksysguard
Summary: BUG: 395349
CHANGELOG: System Monitor now has the ability to hide its menu bar
Reviewers: ngraham, Plasma, Frameworks
Reviewed By: ngraham, sitter
Subscribers: broulik, sitter, acrouthamel, ngraham, plasma-devel
Tags: Plasma
Differential Revision: https://phabricator.kde.org/D15644