I sincerely hope I didn't kill you with my questions
Not sure you really care about the details, but I finally managed to make your extension work. I had to change a few parameters in my template settings, ie. the way I was calling some frameworks and JS scripts. It took me a quite long time to figure things out, but here it is, at last !
Now that it seems to be working, I have to get familiar with your extension. I guess I will come soon again and bother you with some more questions about map customization because that's what I'm after. But that will be only after reading your tutorials don't worry And it will be for another post.