Make it possible to run godrone on non-drone hardware.
Make all four axes visible in the web user interface.
Reduce websocket traffic, allow in-flight reconnect

Made reconnect keep the existing altitude.

Reduced websocket traffic by only sending the
new desired PRYA when it is changed.

Also:

Fixed opacity in emergency div.
Documented how motor cut-off happens.
Reduced log noise.
Nodrone docs.
Merge pull request #53 from jeffallen/nodrone

Make it possible to run godrone on non-drone hardware.