title: Django-crispy-forms change radio button error rendering
body: <p>When an error is rendered for a non-radio button, I see this:</p>
  
  <pre><code>&lt;div id="div_id_field_a" class="control-group error"&gt;
    &lt;label for="id_field_a" class="control-label "&gt;Field A&lt;/label&gt;
    &lt;div class="controls"&gt;
      &lt;select class="select" id="id_field_a" name="field_a"&gt;
        &lt;option value="" selected="selected"&gt;&lt;/option&gt;
        &lt;option value="0"&gt;0&lt;/option&gt;
        &lt;option value="1"&gt;1&lt;/option&gt;
      &lt;/select&gt;
      &lt;span id="error_1_id_field_a" class="help-inline"&gt;&lt;strong&gt;Select one&lt;/strong&gt;&lt;/span&gt;
    &lt;/div&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>When an error is rendered for a radio button, I see this:</p>
  
  <pre><code>&lt;div id="div_id_field_b" class="control-group error"&gt;
    &lt;label for="id_field_b_0" class="control-label "&gt;Field b&lt;/label&gt;
    &lt;div class="controls"&gt;
      &lt;p id="error_1_id_field_b" class="help-block"&gt;&lt;strong&gt;Enter a value&lt;/strong&gt;&lt;/p&gt;
      &lt;label class="radio"&gt;&lt;input type="radio" name="field_b" id="id_field_b_1" value="True"&gt;Yes&lt;/label&gt;
      &lt;label class="radio"&gt; &lt;input type="radio" name="field_b" id="id_field_b_2" value="False"&gt;No&lt;/label&gt;
    &lt;/div&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>How can I get the error message to appear after the radio button controls, which is what happens when a combo box used?  Or at least not render the error inside a <code>p</code> tag and instead a <code>span</code> tag?</p>
  
  <p>Here's how I render the form:</p>
  
  <pre><code>{% load crispy_forms_tags %}
  &lt;form id='main-form'&gt;
    {% csrf_token %}
    {% crispy form form.helper %}
  &lt;/form&gt;
  </code></pre>
  
  <p>and the form:</p>
  
  <pre><code>class MyForm(ReoBaseForm):
    field_b = forms.ChoiceField(required=False, choices=((True, 'Yes'), (False, 'No')),
      label='Field b', widget=forms.RadioSelect())
  
    def __init__(self, *args, **kwargs):
      super(MyForm, self).__init__(*args, **kwargs)
  
      self.helper = FormHelper()
      self.helper.form_tag = False
  </code></pre>