Add support for context aware linkrewriting within faceted navigation

In the current (2.04.xx) HST we have support for context aware linkrewriting. This works if there are multiple sitemap items pointing to the same canonical (non-virtual) nodes, like news/** going to news/

{1} and subjects/animals/news/** to news/{1}

.
There's no support for context aware linkrewriting on virtual nodes, they will always fall back to the canonical path. so even if your matcher for my-virtual-path/news/** points to my-virtual-node-for-news/

{1}

it will rewrite the link to news/**.