Final Image Output updates

This was a web side update, so will update automatically.


- Added Crop white space option, when saving floors on separate images
- Added 2nd crop option, which crops to the largest floor (for scale reasons)
- Improved logic of positioning when saving all images on single image
- This includes reducing the margin around the edges of the plans, so the plans fill more of the image
- Also uses more of the available space on image
- Improved logic of alignment of all floors on single image (now properly ignores porches and balconies etc)