Improved verbose output a little for mode check-config
Fixed issue for Cisco's which have unchanged configs since reload.
It seems after a reload, the startup-changed time is the same as the uptime,
but running-changed is set to somewhere around 20-30 seconds after uptime.
This causes a reloaded cisco to appear as havng an unsaved running config
while this is not the case in reality.
The solution is ugly and allows the running-changed to be within 60 seconds
after the uptime without generating a warning
the running-changed.
Also simplified the code and added appropriate comments.