included #483 improvements
fix#468 last_success MQTT
fix#468 update available status at sunset
fix#447 reorderd enqueue commands to not have same payload length in a row
added ssd1306 and nokia display to build script
* added option to compile WiFi SSID + PWD to firmware
* added option to configure WiFi access point name and password
* added feature to retry connect to station WiFi (configurable timeouts)
* updated index.html
* added option for factory reset
* added info about project on index.html
* moved "update" and "home" to footer
* fixed#23 HM1200 yield day unit
* fixed DNS name of ESP after setup (some commits before)
* 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
* build CRC over settings, only if the CRC matches settings are applied
* send command 0x80 (set time was wrong)
* improved crc16 routine
* added statistics for received commands and send statistics (channels are not correct for now!)
* receive of commands 0x01, 0x02, 0x03, 0x81 and 0x84 working