Pretty up the event show

Author: Gregg

src/views/EventShow.vue

@@ -15,7 +15,7 @@
     <p>{{ event.description }}</p>
 
     <h2>Attendees
-      <span class="badge -fill-gradient">{{ event.attendees.length }}</span>
+      <span class="badge -fill-gradient">{{ event.attendees ? event.attendees.length : 0 }}</span>
     </h2>
     <ul class="list-group">
       <li v-for="(attendee, index) in event.attendees" :key="index" class="list-item">