LightUp v7.4j

- More improvements for using SketchUp PBR inside LightUp rendering.
- Fixes for Sketchup Status bar showing progress
- Fixes for IrrCache reflection when using sRGB rendering
- QueryTool honors any PointLights already selected for editing
- Fixes for VertexLit Components not being rendered sometimes
- Improved PointLight placement on surfaces
- Honors SketchUp AO Strength and Roughness factor