Fix radioButton checked rendering

The comparison for the checked attribute was not working, if the f:selectItem form is used and the values are not string values. In that case the values is compared as string to the object value, that wasn't equal.

src/main/java/net/bootsfaces/component/radiobutton/Radiobutton.java

@@ -65,7 +65,7 @@ public void processEvent(ComponentSystemEvent event) throws AbortProcessingExcep
  	 	}
 	}
 
-public String getFamily() {
+	public String getFamily() {
 		return COMPONENT_FAMILY;
 	}
 

src/main/java/net/bootsfaces/component/radiobutton/RadiobuttonRenderer.java

@@ -205,8 +205,12 @@ public void encodeBegin(FacesContext context, UIComponent component) throws IOEx
 			// traditional JSF approach using f:selectItem[s]
 			int counter=0;
 			for (SelectItemAndComponent option:options) {
+				String o = null;
+				if (null != option.getSelectItem().getValue()) {
+					o = String.valueOf(option.getSelectItem().getValue());
+				}
 				generateASingleRadioButton(context, component, radiobutton, rw, propertyName, beanValue,
-						option.getSelectItem().getValue(),
+						o,
 						option.getSelectItem().getLabel(), clientId+(counter++), option.getSelectItem().isDisabled());
 
 			}