Protecting against null MvcHtmlString
Protecting against null MvcHtmlString

It appears that html helpers will return null when there is nothing
to output. Pretty common with validation-error messages.

RobertTheGrey/spark,RobertTheGrey/spark,RobertTheGrey/spark,SparkViewEngine/spark,SparkViewEngine/spark,RobertTheGrey/spark,SparkViewEngine/spark,SparkViewEngine/spark,SparkViewEngine/spark,SparkViewEngine/spark,RobertTheGrey/spark,RobertTheGrey/spark,SparkViewEngine/spark,RobertTheGrey/spark