Add current state of fhem integration
fhem integration: support battery and version messages
fhem integration: support power switch status
fhem integration: clean up
fhem integration: support set command for power switch
fhem integration: use device address from stored table
fhem integration: clean up unused args, correct on/off bitmask
fhem integration: verify, store and use aes key number for communications
fhem integration: implement statusRequest function
fhem integration: set webCmd and devStateIcon for power switch, beautify version info
fhem integration: log file cleanup

* add correct $name in log file entry
* ignore some more unhelpful shc_base messages
fhem integration: show set commands only for devices that support it
fhem integration: use correct regex to identify device id
Merge pull request #60 from Roadyweb/fhem_tx

Fhem tx