"No Grid" option in crop mode#279

There are several options for different grids while cropping an image but it would be nice to have the option to display no grid at all. Seems easy enough to do.

Yes, I find the grids distracting when adjusting composition in post. Please add NONE option or replace Phi with None. I find Phi along the 1.62 lines not workable at all. If anything the lines should pass through the middle of the spiral (just outside 1/3 intersection at 1.27)