remove authors from spotlight and posters

Author: adrtod

src/ml4u-list-item.html

@@ -230,9 +230,11 @@
                         </div>
                         <div class="wtf session-title">
                             {{listItem.session}}
+                            <template is="dom-if" if="{{displayAuthors}}">
                             <div secondary>
                                 <span id="authorsString" class="session-chair">{{authorsString}}</span>
                             </div>
+                            </template>
                             <template is="dom-if" if="{{isBookmarked}}">
                                 <iron-icon icon="icons:bookmark" class="bookmarked"></iron-icon>
                             </template>
@@ -261,6 +263,10 @@
             type: String,
             computed: 'computeAuthorsString(listItem)'
         },
+        displayAuthors: {
+            type: String,
+            computed: 'computeDisplayAuthors(listItem)'
+        },
         encompassingSessionType: {
           type: String,
         },
@@ -292,6 +298,18 @@
           notify: true
         }
       },
+      computeDisplayAuthors: function(listItem) {
+        if (listItem.type_code == "spotlight") {
+          return false;
+        }
+        if (listItem.type_code == "poster") {
+          return false;
+        }
+        if (listItem.type_code == "demonstration") {
+          return false;
+        }
+        return true;
+      },
       computeIsOral: function() {
         return this.encompassingSessionType == "oral";
       },