Replaced hacked together radio library with a git submodule.

To use, execute:  "git submodule init;git submodule update"

I was forced to hack the original radio library to pieces, so I eventually just wrote my own.
Removed duplicate files.

My radio library already has these, so I'm getting rid of them.
Power monitoring code now works again, but only via serial.

Radio transmit support will be coming soon.
Fixed a formatting issue with the output.

dtostrf gives spaces instead of 0s.
I re-added a function to fix that problem.
Data is now written to an internal buffer before being output.

The radio takes a string as its input, so I'm using strcat and an output string as a buffer.
Now working with the new radio library.

Values are now properly transmitted using standards compliant radio frames.