Add standby thread, dummy server and minor improvements
Add standby thread, dummy server and minor improvements

The standby thread fades between random colors at intervals
and maximal intensity specified in the config.
-Added parameters (max_rgb, standby_intensity,...) to config
-Added dummy server
-Added parameter max_intensity to get_random_rgb to cap brightness
-Fixed bug that always overwrites config with default config

timo95/Analog_RGB_Driver,timo95/Analog_RGB_Driver