Template file to read all and any fields in the content.txt file

At least there is a way to loop through all fields:

<?php
$c = $page->content();
foreach ($c as $key => $value) {
  if ($key == "fields") {
    foreach ($value as $field) {
      echo $field . ": " . $page->$field() . "<br/>";
    }
  }
}
?>

http://getkirby.com/forum/archive/general/20141007/how-to-loop-through-all-fields-on-a-page
Maybe this help as a starting point.