Lay foundation for move to Lightroom import

Hijacked the new_upload form (just swapped one element for the filename).

Made the new element to handle img_file as a bit of text rather than a file.

fixed one logical but in the exifFields element

Moved 4 methods from Upload into Image Model because not having uploadMEIO handle sizing will require turning off the behavior and these necessary methods would be lost.

Made image controller call the moved methods in the new context