adding njspc as a connection when setting up a feed from a device does not populate the selection box

[dkossman]

This is just a UI bug but caused some confusion for me.

pre-requisites

• device has been added to REM and is working
• browser - latest chrome on Mac
• latest REM, njspc cloned from GitHub repos

1. select any device (e.g. 10k probe)
2. select feeds and add a feed
3. click the Connection pulldown (shows Internal and nodejs-poolController
4. select nodejs-poolController
   • expected: the Connection box populates
   • actual: it remains empty

Note that the same problem does not happen if you choose Internal, and also, if you choose nodejs-poolController you can go ahead and select the socket event and property., and everything works.