fixes missing string format value in hs_calibrate.py; Commits transmit_chloro (user tool to upload clorophyll measurements), chloro_cloud_receive (cloudside daemon to upload samples to SQL database), ndvi_sampler (Python script drives ndviSampler C program which averages NDVI over an arbitrary convex polygon and stores result in DB), regress.py (Receives update messages from chloro_cloud_receive and ndvi_sampler, plots both results on one graph using postscript and uploads to cloud)
have regress emit message announcing new plot; Adds user_listen.py so We The People can hear what Streamboss is saying.