Make pfp terminal visible in library

@macumber  next time you do a build, could you check this tiny bugfix?  It makes the Parallel PIU terminal available in the OS App without having to use a template system. 

1. Go to the HVAC Systems>Library
2. You should see a category for "AirTerminal Single Duct Parallel PIU Reheat"
3. It should have the name "Parallel PIU Terminal w CAV Fan and Electric Reheat"
4. You should be able to drag it onto an airloop

Thanks!