Only show system total cpu usage by default on high core count machines
Summary:
Currently, the default configuration of showing all individual cores is pretty useless on system with a high number of cores.
This changes the default to only show all individual cores on systems with 8 cores or less, on systems with more cores only the total cpu usage is shown
Reviewers: Plasma, VDG, davidedmundson
Reviewed By: Plasma, davidedmundson
Subscribers: ngraham, davidedmundson, plasma-devel
Tags: Plasma
Differential Revision: https://phabricator.kde.org/D21690