v1.0.8-beta7

Fix for get_raw_voltage return "None "due to I²C-Error halting system
Added check_undervoltage for raspberry
Fixed exception handling ds18b20
Added error logging for hx711 issues extended
Added function to view number of elements removed by data_filter
Added support for second bme680
Added support for unencrypted wifis (no password)
Added field to change modem/surfstick APN and ttyUSB input
Added support for Dummyload of WittyPi 3
Added field for custom ThingSpeak Server URL
Added support for EE895 sensor (CO2)
Betatest to support a new Surfstick
Added default gateway reporting on startup to logfile
Added interface status reporting on startup to logfile