Site Search Tool - Phase 3.75

This carries the site search tools into the specialized Image Edit side of the world.

Now the three image editing pages, image_grid, multi_add, and clean_up, can use the site search tool to get record sets.

There may be problems that come up. There is a lot of junk code left over from my previous admin-only edit tool on the image-edit side. That stuff is still partially functional because it provides default found sets if no search was done.

Other changes to refine the code were made here and there too.