gui: Force emit source match signal on RUN

Signed-off-by: Michael Buesch <m@bues.ch>
statusword: Default to EN mnemonics

Signed-off-by: Michael Buesch <m@bues.ch>
gui: Only automatically upload code, if in simulator mode

Signed-off-by: Michael Buesch <m@bues.ch>
gui: Release stop button, if failed to go online

Signed-off-by: Michael Buesch <m@bues.ch>