[Build] reposition lights at 2169

[jim]

   we should think about light placement; seems to me that 
we reposition the lights we have: 
* over the shop area 
* over the two classroom areas 
* over the electronics work area 
* over any areas likely for used for reading 
* over the kitchen area 

   i'd like to see what it's like to put up a light fixture 
for indirect lighting: e.g. hang one upside down facing a 
wall/ceiling corner or maybe upside down above a classroom 
wall and facing somewhat into the classroom area.