Add cHash parameter to links in list-view

Replace the link_TP() function with typolink(). The first is more
comfortable but it lacks the possibility to add the cHash parameter to the
link.

Without the cHash parameter, the target page will be forced to be rendered even
if a cached version is present.
GET variable pointer is not necessary to list (sub-)entries.
Merge pull request #11 from albig/fix-link-with-chash-listview

Add cHash parameter to links in list-view