Resend correct gcode line when resend is requested
Also include /dev/ttyAMA* in glob patterns for serial port
First work on custom controls with printer feedback evaluation and presentation in the UI
Merge remote-tracking branch 'CapnBry/resendfix' into devel
Feedback commands now work
Merge branch 'feedbackCommands' into devel
Be able to cope with M999 causing a Resend: 1
Made communication mode more error resilient
Merge branch 'devel' into events

Conflicts:
	octoprint/util/comm.py
More errors == more error events