Make CPU load more visible in dashboard/robot monitor (ros ticket #3433)

[ahendrix]

From ros-pkg 3448:

{{{
Feedback from the diagnostics use-case, in which the user had to use the robot_monitor to diagnose problems:

* If possible, "Very High Load" should be colored red in the popup for the diagnostic message from the cpu monitor. 

}}}

Maybe we should make a separate top-level thing for the CPU monitor. It could show up in the dashboard, and look like a mini-Windows Task Manager

trac data:

• Owner: ahendrix
• Reporter: watts
• Reported at: Wed Jan 6 13:41:06 2010
• URL: https://code.ros.org/trac/wg-ros-pkg/ticket/3433

[ahendrix]

[jfaust] A computers status topic would let us to this in the dashboard... possibly show red/yellow/green and then have a popup showing cpu/memory/etc. in graph form.

[ahendrix]

[watts] Agreed. I think this can be part of a pr2_computer_monitor upgrade.

[ahendrix]

[watts] Not going to happen for milestone.