fix issue when field name contains 'number' or other validation keywords

openatlas/templates/forms/reference_field.html

@@ -1,7 +1,7 @@
 <div class="row g-1">
   <div class="col-6">
     <input autocomplete="off" style="position: relative" value="{{ field.data['value'] or '' }}" id="reference_system_value_{{ field.reference_system_id }}" placeholder="{{ field.placeholder }}" name="reference_system_id_{{ field.reference_system_id }}"
-           type="text" class="{{ field.label.text }} {{ config.CSS.string_field }}"/>
+           type="text" class="{{ field.label.text.replace(' ','-') }} {{ config.CSS.string_field }}"/>
 
   </div>
   <div class="col-6">