Hello,
The German Wikipedia chapter is organizing the conference and their team gives scholarships. The scholarship deadline was September 20, I think, but perhaps there are other funding options. I recommend contacting them on the conference's talk page.
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https://meta.wikimedia.org/wiki/Wikimedia_Diversity_Conference>
The process for getting funding for any Wikimedia conference is generally a culture check - you demonstrate somehow that you are part of the Wikimedia community - and then propose an idea and get community support. Being part of the community is a big part of this because huge numbers of outsides send advice into the community without understanding anything about how Wikipedia works, and the community simply does not respond to such requests because nothing comes of them.
I tried your interface and it is really cool. Other people should check it out. You have lots of options for soliciting other community support but I would be happy to help you interface with the Wikipedia community as you like. To start I have the following advice: