TYPO3 Core

The Path to a page with an error is very hard to read if you have search engine optimised page titles.

Solution:
use nav_title if there is one, if not use the title

Steps to reproduce:
- Create a page with a very long page title
- enter some text with a link to a not existing page
- start the linkvalidator
- See a path link this Welcome to bla bla, Product1 product2 Keyword, special keyword, an extralong keyword/page2/

I will provide a path maybe on sunday.
If one is faster than me, this functions needs to be touched:
t3lib_BEfunc::BEgetRootLine
t3lib_BEfunc::getPageForRootline
(issue imported from #M17384)