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 branch 'master' of git://git.code.sf.net/p/openpli/enigma2