Populate DAQmx channel selection list based on target

[stagg54]

In the Config Editor when selecting a DAQmx Channel in both the pull down and the tree view, the list is populated with the channels on the local system, not on the target. Most of the time I am editing the configuration on my Windows machine, but it is getting deployed to a CRIO, hence I have to type everything in manually. It would be nice if that list showed the available channels on the target.