upgrading MITRA 6100hv to 6200hv

[sphelps]

Weird, didn't realize the 6100 was getting phased out by the 6200, just thought it was another option. So people adding additional mitras later down the road are now forced to update existing 6100s to 6200s. That's kind of BS in my mind since these are modular fixtures. Perhaps those 6100 pucks have decent value after all.