HRSPLT-166 Gracefully degrade when status URLs not available

Gracefully degrade in showing or not the new voluntary status reporting links depending on whether those URLs are available in the URL map.  This will allow the updated portlet to migrate to production independently of the timeline on which the new URL key-value pairs are available in the production HRS web services.

Thought of this improvement to robustness in the face of actually experiencing what the portlet now looks like when these URLs aren't available (it's confusing).