Gate and LED support

In this release

The two biggest changes are support for gate modules and LED modules. Full list of features below.

Enhancements:

1. Support open/close gate devices
2. New switch read only type of channel (use by gate devices)
3. Support LED and dimmerable LED
4. Better logging
5. Update jSuplaApi to version 2.0.2
6. Support roller shutter in native Supla server
7. Support caption (from Supla Cloud) for channels
8. Nice names for things in discovery
9. Proper values of temperature and humity (with adjustments from param2 and param3)