Bunch of teaks to IdeViewer

- add grid
- slit normals
- resync openscad camera with three camera
- fix stl download for CQ and openscad
- clean up failed preview image attempt

app/web/src/components/DelayedPingAnimation/DelayedPingAnimation.tsx

@@ -12,7 +12,6 @@ const DelayedPingAnimation = ({
     } else if (isLoading && !showLoading) {
       timeoutId = setTimeout(() => {
         setShowLoading(isLoading)
-        console.log('setloading')
       }, 300) as unknown as number
     } else if (!isLoading) {
       setShowLoading(isLoading)