feat(opinions.html): Ensure Case Name displays

If case name full is the only case name
use it and then dont display it in the
metadata section

cl/opinion_page/templates/opinions.html

@@ -216,14 +216,13 @@ <h3>
                 </div>
             </div>
 
-                <div class="case-caption jump-link" id="caption">{{ cluster.docket.case_name }}</div>
+                <div class="case-caption jump-link" id="caption">{% if cluster.case_name %}{{ cluster.case_name }}{% elif cluster.case_name_full %} {{ cluster.case_name_full }}{% else %}{{ cluster.case_name_short }}{% endif %}</div>
                 <h4 class="case-court">{{ cluster.docket.court }}</h4>
                 <br>
                 <div class="case-details">
                     <ul class="list-unstyled">
                         <li><strong>Citations:</strong> {{ cluster.citation_string|default:"None known" }}</li>
-
-                        {% if cluster.case_name_full != cluster.case_name and cluster.case_name_full != "" %}
+                        {% if cluster.case_name_full != cluster.case_name and cluster.case_name_full != "" and cluster.case_name != "" %}
                         <li><strong>Full Case Name:</strong>
                             {{ cluster.case_name_full }}
                         </li>