* improved web serial console
* added multi inverter total values (published through MQTT)
* fixed: after boot there were transferred wrong data because of incorrect assignment (mqtt, visualization)
-> not tested with sun
+ command queue
+ feedback from inverter for actual power limit via InfoCmd -> SystemConfigPara (0x05)
+ REST API will enqueue a new info command
+ change in power limit will enqueue infocm to get actual power limit
+ actual power limit is available under mqtt topic <TOPIC>/<NAME>/ch0/PowerLimit ALWAYS in percent
+ Firmware information will be requested automatically up on start of dtu
* improved RF24 ISR
* reduced AP active time to 60s (will be increase once a client is connected)
* added `yield` without success -> random reboot (cause 4)
* html / css files are now located inside PROGMEM
* conversion of files is done with python script (OS independent, open source)
* moved as much as possible for now to the hm* modules - the app should only be the body
* successfully tested with HM1200