allow repeated use of hrfix quickbutton

[DenOfEquity]

as discussed in #1535 Note that the Size recorded in geninfo is the size of the input image, so from iteration 2 it will increase. This means using geninfo from those iterations will give a different result. To mitigate this, I've added 'Original Size:' to the geninfo - this is purely informational.

Also removed a redundant geninfo update for the upscaled image in the gallery.