* add option to strip webUI for ESP8266 (reduce code size, add ESP32 special features; `IF_ESP32` directives)
* started to get CMT info into `system` - not finished
reduced maximum allowed JSON size for API to 6000Bytes #660
small fix: output command at `prepareDevInformCmd` #692
improved inverter handling for MQTT #671
* bound html through ajax to parse setup page (not finished now)
* added compression option for static html to python module
* removed generated h-file from index (redundant information), they will be created on compile time
* 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