I'm not a community wiki admin, but I think the best is probably to create a new Page for KPhotoAlbum and then add it to the list of projects.
You probably only need to move the building page and the developer information section. Maybe you could also add links to https://www.kphotoalbum.org/gettinginvolved/ and https://www.kphotoalbum.org/gettinginvolved/juniorjobs/.
If you have questions or/and need help don't hesitate to ask. :D
Thanks for the suggestions.
I hope it was ok that I copied the development topics over without translations.
Also: is it ok to leave a redirection at Building_KPhotoAlbum?
It seems that either I got the redirect syntax wrong. Can you take a look at Building_KPhotoAlbum and tell me what's wrong?
Looks like media wiki, don't allow us to create a redirection to another website. So I added redirection instructions. Thanks for your work :) KPhotoAlbum is a great app :)