Multiple enhancements to components of kde4-workspaces
KInfoCenter:

• obey user's unit preferences (IEC vs JEDEC) when displaying PCI info
• correct the units, someone forgot about terabytes

KSysGuard:

• make plotter obey user's unit preferences (status bar was correct)
• change tooltip to use same or adjacent unit scale as the plot
• support a description different from the sensor name for use as the label
• add an additional step to label widths so horizontal resize is smoother
• change status bar elements from fixed layout to proportional layout
• space permitting, show more detailed memory stats in the status bar
• replace simplistic (app) memory & swap graph with a detailed graph

Plasma Desktop:

• hide the Desktop Toolbox (aka "the cashew") when widgets are locked

NB: KSysGuard caches the layouts, delete ~/.kde4/share/apps/ksysguard/*

when upgrading so the new layout (detailed memory graph) is used

Reviewed by: tcberner
Approved by: swills (mentor)
Differential Revision: https://reviews.freebsd.org/D9760