Merge pull request #1 from eroux/master

Non-recursive namespace lookup, not showing hidden nor unreadable pages
Merge pull request #2 from eroux/master

Adding reference to bugreport
A small oversight

Name changed of a variable
Error regarding the previous version

Already worked like that before
Plugin hidden on start page

When we are on a start page with no other file, the plugin is hidden.
It’d be usefull to find a solution. Why not the plugin should remain
always visible? I’d be more simple. The images "-off" seem to be
sufficients to indicate no other page. In addition, the layout is thus
more homogeneous.
Merge pull request #1 from quotidianus/master

finishing pagenav update