removed MQTT `available_text` (can be deducted from `available`)
enhanced MQTT documentation in `User_Manual.md`
remvoed `tickSunset` and `tickSunrise` from MQTT. It's not needed any more because of minute wise check of status (`processIvStatus`)
changed MQTT topic `status` to nummeric value, check documentation in `User_Manual.md`
fix regular expression of `setup.html` for inverter name and channel name
added heap as MQTT publish
updated User_Manual.md to latest changes
development build will have now always the same name because of static link from https://ahoydtu.de