updates for 4.0

Add support for newly discovered variant of MRF2-6ANS which identifies itself like an RRD-8ANS

report shade levels according to openhab standards (ie, inverted from lutron's)

really remove sample thing and add switch

get discovery running again
remove unwanted thing type

more 3.0 nonsense

partially working 3.x binding

Have a better understanding of how the lutron core works, using the proper ids for power devices as well as shades.

removing no-longer-needed components

rewrite for openhab 2.5

initial commit of lutron-mqtt (hacked wink hub) binding