More Default RAM tuning but with normal CommitLimit

CommitLimit	396588 kB
and
Committed_AS:   4286788 kB

now corrected!

CommitLimit:     5552260 kB
Committed_AS:    4286788 kB

and more aggressive RAm release by 32/32 as default!
With the default values of sending 9 probes with 75 seconds for each, it would take approximately 11 minutes before the connection is timed out ... "

now we have 3 * 20 seconds => 1m [need testing]
Added nohup to profiles restore + reniced uci.sh to 15 to reduce it's hold on system boot.