Standby: do not timeout to deepstandby when a tuner is in use

This avoids that the box goes to deepstandby when via remote stream a
tuner is still in use.
Standby: for now I poll each 10 minutes for a tuner in use

As between zapping we get a status tuner mask 0 so the client box was not
able to zap. Still I have to think for a better solution.
Make wake-on-LAN configurable from the enigma2 user interface

And optimised some code
SystemInfo/UsageConfig: optimized some more code
Fix servicescan summary screen for et10k/VU-Duo2 display

Thanks Betacentauri
https://github.com/XTAv2/Enigma2/commit/7dc4aa1d64b5aad22ecae5cd004d5678962a6b64
Once a channel is considered to be encrypted keep it flagged encrypted

Further research is required. Removing the fake CA 0000 seems not to work
as randomly here the flag disappears. So what was made from the beginning
seems for now the best compromis
Merge remote-tracking branch 'pli/master', skip some stuff