SS3.2 Compatability

[thezenmonkey]

I started playing with GalleryUplaodFIeld in SS3.2. I've corrected for the new markup, and changed the way theh ManyMany extra fields are handled:

Still to do, fix sort order when adding items. New items get a SortOrder of 0 but render at bottom of list on upload.

[frankmullenger]

@thezenmonkey nice work!

[thezenmonkey]

I've got the initial sort working, though it seems a littl hacky to me. I use the order of the file IDs from $_POST['Images']['Files'], if you can think of a better way it may be cleaner.

[frankmullenger]

@thezenmonkey I haven't looked at this code in a while, if it works it's fine by me :-)