> What is the name of Sbillard Fork? Where can I find him?
Sorry, search on GitHub and you will be able to find it. Again, it is not supported over here.
Well, you are free to create your own fork and make your own changes you think you need. But don't expect we agree to everything or will incorporate it or support it over here. We will not make any signficiant changes in the 1.x release stream anymore. Otherwise we never get our planned major release ready (no, you cannot preview this) and we already changed a bunch of things internally which causes double work. We're not working full time here.
> I also thought of a simple standard responsive theme.
Any third party theme contributed is welcome. Not everything must be included and we encourage anyone to create themes or plugins as he need himself (a new theme is planned for the major release though). Besides there are some responsive third party themes. If these don't fit your purpose, create your own.
> PS: There are many dead internal links on zenphoto.org and in searchengine results. This is not a good sign. Dead Links - Dead Website - Dead ZenPhoto.
Of course we switched the forum software last year as the software used was abandoned. Therefore a lot internal forum links are outdated as there is no way to redirect them (besides a lot of old forum posts are outdated anyway).