Added OS:Fan:ZoneExhaust to IDD.  Kyle, I'm not totally sure about the System Availability Manager Coupling Mode Field.  I kept it for now.  I didn't build yet.  I will do that now after commit.
Updated Exhaust Fan IDD and starting point files from GenerateClass
All files needed for FanZoneExhaust added and tested (successful build).  Now just need to add to App.
Added and modified files to get FanZoneExhaust to show up in App.  Still need a real icon (borrow constant volume fan for now).  Also checking in forward translator file
Updated MainRightColumnController so that FanZoneExhaust shows up with other zone components in App.  Prior to merge, entry still needs to be added to hvac_library.osm.
Updated hvac_library.osm.  FanZoneExhaust can now be used in App.  Also made changes according to Mark's comments.  Builds fine.  Now only need to add icons.
Merge remote-tracking branch 'origin/develop' into 60780070_ExhaustFan
Version translate hvac_library to 1.2.3
Update zone exhaust fan icons
Merge pull request #838 from NREL/60780070_ExhaustFan

60780070 exhaust fan