Change canbus module to allow more than one connection

The canbus module had a global list of adapters and Queues
and such that made it impossible to have more than one
connection on the canbus.  This change needed to be made so that
more than one canbus connection can be made.
Add CAN-FIX communication
Merge https://github.com/neil-d95/pyEfis into hsi

Conflicts:
	pyEfis.py
Reverse angles of AI.  They were backwards.
Add heading to signal to HSI
Add background color to main widget
Add round gauge class to project
Add minor tick marks and text to AI.
Added base for airspeed and altimeter moved testing sliders to respected
instrument.