Pick which probes have their panels shown

[kjy5]

Feature suggestion from Kim: When there are multiple probes, the display will reduce to only showing 1. It would be useful if a select few from the multiple probes could be picked to continue displaying their channel maps. This is mostly relevant to 2.4 probes because the 4 shanks take up a lot of space and after 3 or 4 of them Pinpoint reduces display to only 1