Average Layer Time formatting

As of version 1.19.x, the DisplayLayerProgress plugin is no longer required. The below is only relevant for older versions.

The Average Layer Time comes from the DisplayLayerProgress plugin and is by default formatted as "0h:00m:00s". This looks a bit strange compared to the other times that are formatted as "hh:mm:ss". This can however be addressed by a setting in DisplayLayerProgress. Go to OctoPrint Settings/Plugins/DisplayLayerProgress. In the Display Tab, locate the Average layer duration Format field and change it to "{H:02}:{M:02}:{S:02}"