Form and theme improvements (#513)

templates/form/kimai-theme.html.twig

@@ -1,15 +1,9 @@
 {% extends "@AdminLTE/layout/form-theme.html.twig" %}
 
+{# Adds the help icon, including a link to the documentation #}
 {% block form_label %}
     {% if form.vars.docu_chapter is defined and form.vars.docu_chapter is not empty %}
         <a href="{{ path('help_chapter', {'chapter': form.vars.docu_chapter}) }}"><i class="{{ 'help'|icon }}"></i></a>
     {% endif %}
     {{ parent() }}
 {% endblock form_label %}
-
-{% block choice_widget_collapsed %}
-    {% if 'data-api-url' in attr|keys %}
-        {% set attr = attr|merge({'data-api-url': path(attr['data-api-url']|first, attr['data-api-url']|last)}) %}
-    {% endif %}
-    {{ parent() }}
-{% endblock %}