I finally made additional media upload to replays possible. Sorry it took so looong...
If an "owner" (uploader) of a replays is logged in, he will see a link "»»» Upload media files. «««" on a replay page. Then images or other files can be uploaded.
Additional users can be allowed by the uploader, if he sends me a PM with their lobby-nicks.
I uploaded an image and your cool NOTA-TV to http://replays.springrts.com/replay/a34 ... a79b8f899/
to test it. You will see that the SVG is a problem. It almost kills my FF. I can just link to it, so that browsers will open it maximized. I know there are some controls possible, but I have no knowledge about it. If you investigate that and can create an example-html-page somewhere, or a patch @github, that would be nice.
If you want to play around a bit with the upload feature, log into the test-site: http://replays-test.springrts.com
with your/any lobby-account, upload a replay, and upload stuff - the test-site is for screwing around - a sandbox, so don't hold back :)