truncate calendar title

ui/src/components/calendar/Calendar.vue

@@ -1,6 +1,8 @@
 <template>
   <v-list>
-    <span class="text-h5 text-md-h4 d-inline-block mb-2">{{ title }}</span>
+    <span class="text-h5 text-md-h4 text-truncate d-inline-block mb-2">
+      {{ title }}
+    </span>
     <template v-for="(event, index) in events">
       <EventItem :event="event" :key="event.hash" />
       <v-divider