|| Hi Neill,
looks really great. I see the success...
Just a small bug. The MediaWiki:Hf-nsheader- or Template:Main_Navbar don't produce correct results. The overlay does not over the underlying "header".
In fact, what keeps me puzzled is that the "header" looks to be hard coded (it always has the UNIK Wiki, UNIK Courses...) in the bottom, and the settings from HF-nsheader- as an overlay.