removed unused event
store visible_sensors and visible_actuators in  so that directives do not have to keep re-filtering for these, because they were calling the filters a LOT and that is inefficient
deleted a TODO that was already completed
2px border shows up way more reliably on mobile device than 1px border
made on/off pin value display in settings for sensor pins more consistent in the ON mode with the actuator pins
made vertical slider thumbs for input_min and input_max be the same color as the vertical slider thumb for damping to indicate that they are touchable
made analog input_min and input_max vertical sliders have bigger thumbs for easier mobile use
made damping vertical slider thumb a little bigger for easier mobile use
made vertical-slider container big enough to hold the bigger slider thumb
center damping slider
made touch targets on input_min and input_max sliders bigger for ease of use