FXOLAT-208: add css class for disclaimer

src/main/java/org/olat/core/gui/components/form/flexible/impl/_content/form_vertical.html

@@ -7,7 +7,6 @@
 
 #foreach ($item in $formitemnames)
 #if ($f.isVisible($item))
-$f.getElementCssClass($item)
 	#if($f.hasError($item))
 	<div class="b_form_element_wrapper$f.getElementCssClass($item) b_form_vertical b_form_error b_clearfix">		
 	#else

src/main/java/org/olat/registration/DisclaimerFormController.java

@@ -101,6 +101,7 @@ public class DisclaimerFormController extends FormBasicController {
 			// Create submit and cancel buttons
 			final FormLayoutContainer buttonLayout = FormLayoutContainer.createButtonLayout("buttonLayout", getTranslator());
 			formLayout.add(buttonLayout);
+			buttonLayout.setElementCssClass("o_sel_disclaimer_buttons");
 			uifactory.addFormSubmitButton(DCL_ACCEPT, NLS_DISCLAIMER_OK, buttonLayout);
 			uifactory.addFormCancelButton(NLS_DISCLAIMER_NOK, buttonLayout, ureq, getWindowControl());			
 		}