Lots of fixes to "media threads"

src/components/messages/MessageIncoming.vue

@@ -8,7 +8,7 @@
       </div>
     </div>
     <v-avatar class="avatar" ref="avatar" size="32" color="#ededed" @click.stop="otherAvatarClicked($refs.avatar.$el)">
-      <img v-if="messageEventAvatar(event)" :src="messageEventAvatar(event)" />
+      <img v-if="messageEventAvatar(event)" :src="messageEventAvatar(event)" onerror="this.style.display='none'" />
       <span v-else class="white--text headline">{{
         eventSenderDisplayName(event).substring(0, 1).toUpperCase()
       }}</span>
@@ -20,7 +20,7 @@
         <v-icon>more_vert</v-icon>
       </v-btn>
     </div>
-    <QuickReactions :event="event" :timelineSet="timelineSet" v-on="$listeners"/>
+    <QuickReactions :event="eventForReactions" :timelineSet="timelineSet" v-on="$listeners"/>
     <SeenBy :room="room" :event="event"/>
   </div>
 </template>