Improve work with command line option '--help'

In Windows GUI application doesn't have console stdout/stderr output
even if it's running from command line (i.e cmd.exe). So help message
wouldn't be visible to user. Fix that by using QMessageBox::information
method when built for this OS.
[Adalight] open device in unbuffered mode
Change branding
Firmware final release (version 6)
Prevent blinking (MoodLamp color) after starting Prismatik
Make Settings logging more informative

Add value to logging information. With the same amount of
lines in the log it will be more useful for troubleshooting.
Fix "Mood lamp not saved after restart"

Every time when Change Locale event occurs, Qt repopulates
Mode Combobox with translated items. This causes mode change as it looks
like legitimate user action from point of view of signal handler.
Implement dirty workaround, UI to be reworked soon.

Issue: https://github.com/Atarity/Lightpack/issues/68
Cleanup dead code