Change Navigation

Hi XWiki Forum,
I have the Question, where and how i can Change the Navigation Bar at the left.

I have the problem, that the title from a site is longer than the area. There comes unwantet line interlaces.
Now i want, that when it is so, the title get shorten on one line and continued with …

Another question is, when possible, how (and where) i can change the “•” and “>” and make them to another symbol.
I know, it´s a small wish, but very helpful.

I use XWiki 11.10 with ubuntu 16.04 and tomcat8

Thanks for Help

One idea is to look at the HTML generated in your browser, and put some CSS rules tp achieve what you wish (using a CSS Skin Extension - see