dont show section if section is not visible completely

Signed-off-by: Michael Kaufmann <d00p@froxlor.org>

templates/Froxlor/form/form.html.twig

@@ -4,6 +4,7 @@
 
 	<form action="{{ formaction|default("") }}" method="post" enctype="application/x-www-form-urlencoded" class="form">
 		{% for sid,section in form_data.sections %}
+			{% if section.visible is not defined or (section.visible is defined and section.visible == true) %}
 			<div class="card mb-3" id="{{ sid }}">
 				{% if section.title is not empty %}
 					<div class="card-header">
@@ -19,6 +20,7 @@
 					{% endfor %}
 				</div>
 			</div>
+			{% endif %}
 		{% endfor %}
 
 		{% if nosubmit == false %}