anchor.diff:        <legend><%= Spree.t('avatax_tax_calculation') %></legend>
         <p>
           <label><%= Spree.t('enable_avatax_tax_calculation') %></label><br />
  -        <%= check_box_tag('settings[tax_calculation]','yes' , Spree::AvalaraPreference.tax_calculation.value, :class => 'avatax') %>
  +        <%= check_box_tag('settings[tax_calculation]', true, Spree::AvalaraPreference.tax_calculation.is_true?, :class => 'avatax') %>
         </p>
       </fieldset>
   
  
positive.code:       <legend><%= Spree.t('avatax_address_validation') %></legend>
        <p>
          <label><%= Spree.t('enable_avatax_address_validation') %></label><br />
          <%= check_box_tag('settings[address_validation]','yes' , Spree::AvalaraPreference.address_validation.value, :class => 'avatax') %>
        </p>
        <p>
          <label>Refuse Checkout if Address Validation Fails</label><br />
          <%= check_box_tag('settings[refuse_checkout_address_validation_error]','yes' , Spree::AvalaraPreference.refuse_checkout_address_validation_error.value, :class => 'avatax') %>
        </p>
        <p>
          <label>Customer can validate address in checkout</label><br />
          <%= check_box_tag('settings[customer_can_validate]','yes' , Spree::AvalaraPreference.customer_can_validate.value, :class => 'avatax') %>
        </p>
      </fieldset>
  
  
negative.code:       <legend><%= Spree.t('avatax_logging') %></legend>
        <p>
          <label><%= Spree.t('enable_avatax_logging') %></label><br />
          <%= check_box_tag('settings[log]', true, Spree::AvalaraPreference.log.is_true?, :class => 'avatax') %>
        </p>
        <p>
          <label><%= Spree.t('enable_avatax_log_to_stdout') %></label><br />
          <%= check_box_tag('settings[log_to_stdout]', true, Spree::AvalaraPreference.log_to_stdout.is_true?, :class => 'avatax') %>
        </p>
      </fieldset>
  
  