As it is now option Pagination on Post / Page view template is uselless, never used. You can remove it.
WordPress (and other CMS) use it only on Blog / Archive template and Posts listings.
Can you...
Add this in your Settings - Additional CMS Code:
function spacedmonkey_pages($old){
$old = '<nav><ul class="pagination"><li class="disabled"><span><b>Unterseiten:...