Exactly the same request as CONF-25638, but with different reasons.

I find renaming images really confusing and unpleasent user experience, mainly from this scenario:

1. When editing a page with lots of clipboard pasted images.
2. I pasted lots of images.
3. Now i want to rename the pictures properly for easy referencing.
4. Went to the attachments of the page, not so good looking.
5. Started to rename files, and I need to tab-shift back and forth with different tabs just to preview the images so i don't rename them wrongly.

This is absolutely madness if i need to do this even once a day or a few times a week.

Please, include the thumbnail of the image some where in the property of the attachment if it is a image type.