Inputs 10, 11, 12 configure correctly but only activate a feed hold on active low

[RobMackie]

standard doors showed this.

[tedh-shopbot]

I have tested inputs 9, 10, 11, and 12 individually and in groups of 2-4 for STOP, INTERLOCK, and (new) LIMIT function with polarity for the input set to high or low in the config manager (in various combinations). For the current 'master' version of the software, in all cases the inputs seemed to work as they should for both high and low polarities -- producing a feed-hold in G2 and bringing up a modal warning/info display.

I did notice that the icon for the action (e.g. "STOP" or "INTERLOCK") in the small DRO was visible for only the highest number input in the case that multiple inputs with a given action were declared, though the change in color of the input # icon did occur correctly. I have fixed that display item and issues a PR.

[kyle-kingsbury]

Leave this open for now.