Fix slice engine ui handling.
Merge branch 'development' of https://github.com/MatterHackers/MatterControl into development
Merge remote-tracking branch 'origin/1.1.3' into development
Merge remote-tracking branch 'upstream/development' into development
Merge branch '1.1.3' into development
Merge branch '1.1.3' into development
Make the window state that it uses gl.
Changed Revolution 3D model name in static data from 'Infinity' to INF3D-SPE
Merge remote-tracking branch 'upstream/development' into development
Changed printer name from Infinity to INF3D-SPE in the correct static data folder
sleep outside of the lock
Merge remote-tracking branch 'Greg/development' into 1.1.3