make data human readable

[davidak]

for example the uptime. what is that? seconds?

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Fairphone 2 Installed from F-Droid

[iamtrk]

First value is the total number of seconds the system has been up & the second value is how much of that time the machine has spent idle.

Most of this data is directly read from proc file system, I think it does make sense to make it human readable.