It's done, the server when you upload a skin it analyzes the metadata so the user won't need to enter manually the name of the skin, the author and the skin version.
Also it checks if the aurora version is plus than 0.6, if not, it won't allow you to upload it.
Same thing with coverflows.
The website and thescript are in maintenance, when it's available i will edit the post with the new URL and will update the official repo. I think in a few hours i will finish it all
Some ToDos:
When the next Aurora releases, i will add a feature to download only the skins compatible with the version you have, for now it's not needed.
When the web got more content i will add a feature on the website to list the skins with an install button so you can select install on many content and when you start the SkinDownloader will ask you to download the queue you requested on the website