lot of formfield corrections; form-adjustments; implementing of add/edit for most customer_* pages

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

templates/Froxlor/form/formfields.html.twig

@@ -73,6 +73,9 @@
 		{% if field.type == 'hidden' and field.display is defined %}
 			<input type="text" readonly class="form-control-plaintext" value="{{ field.display }}">
 		{% endif %}
+		{% if field.note is defined and field.note is not empty %}
+		<div class="invalid-feedback">{{ field.note|raw }}</div>
+		{% endif %}
 		{% if field.next_to is defined %}
 			{% for nid, nfield in field.next_to %}
 				{% if nfield.next_to_prefix is defined %}