Changed clean_link_id to convert the input to lower characters for user comfort.
It has been changed in a couple of files, most importantly in logic/cleaning.py wich will be used by future forms to do their cleaning.
Patch by: Lennard de Rijk
{% comment %}
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{% endcomment %}
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN">
<html lang="en">
<head>
<title>404 Not Found</title>
</head>
<body><h1>404 Not Found</h1></body>
</html>