We added photo upload!
Just use the button "Upload Photos" on the big track view. Many photos can be uploaded at once. Photos will appear under the track.
Geo-tagged photos will automatically appear on the map, others can be placed/moved using drag and drop (even in Earth view).
Click on the thumb to see big photo, then use "Map", "Next", "Prev" buttons to navigate the gallery. You can also use arrows or "A","S","D" buttons to navigate. Click on the caption below to edit it.
That's all at this moment, but we're working on it.
You can see an example here.
PS: You can now place photos automatically