Add MainView to form before closing progress overlay
Add MainView to form before closing progress overlay

- Ensures that expensive layout occurs before shutdown progress

unlimitedbacon/MatterControl,jlewin/MatterControl,unlimitedbacon/MatterControl,unlimitedbacon/MatterControl,jlewin/MatterControl,unlimitedbacon/MatterControl,jlewin/MatterControl,larsbrubaker/MatterControl,larsbrubaker/MatterControl,larsbrubaker/MatterControl,mmoening/MatterControl,mmoening/MatterControl,mmoening/MatterControl,jlewin/MatterControl,larsbrubaker/MatterControl