GCode viewer now updates its visualization (during printing) based on the current progress percentage, not based on the current line (which will not be available any more as part of the progress tuple with gcode streaming)
Warning: Many settings will need a restart of OctoPrint to take effect, adding corresponding notes is still a TODO. There's also no proper validation and error handling yet, so use at your own risk.
Did some minor changes: renamed gcode tab, renamed gcode file download endpoint, added some margin for gcode viewer accordion. Not sure yet what to do about the gcode viewer controls/settings, until I figure this out they'll stay where they are now ,)