drivers.py, uspec.py -- changed synchronisation

Sync button is now located along with the windows, both on the GUI and programmatically. This is mainly a programming advantage in terms of logical grouping.
usdriver.conf, drivers.py -- access TCS started
uspec.py -- filterwheel code started
filterwheel.py -- new part from Stu

controls filterwheel
data/__init__.py, setup.py -- tweak distribution