Need a way to get to first imported image quickly

[AM909]

In r3392, when you right-click on a GPX layer in the Layers list and choose "Import Images" to create a new "Geotagged Images" layer, and then open the "Geotagged Images" dialog, it initially says "no image". You have to click on an image icon in the map viewer to get it to load an image. If you are working with hundreds of images that are not in a simple pattern, it can be difficult to find the first image if you want to process them in order.

Please either make the dialog auto-load the first image if it has not been created for that layer or (better) add a "|<<" button beside the left arrow button to do this.