Fixed potential out-of-bounds write in MQTT
Fixed IR pin not changeable if IR disabled
Fixed XML API <wv> containing -1 on Manual only RGBW mode (see #888, #1783)
- Utilizing addToConfig() & readFromConfig()
- UM configuration Settings page
- MQTT support for usermods
- A few sample usermods including rewritten Temparature and new Multi-Relay
The previous code only looked for certain keywords in the topic instead of comparing it completely.
For example if mqttDeviceTopic is set to "lights/colorRGB" the MQTT interface is unusable because
the search for "/col" will always return a match and therefore any MQTT command is interpreted as
a color.
The new code checks the full topic.
