more FA5 stuff with small related refactoring

src/components/search/search.js

@@ -2,6 +2,12 @@ import FollowCard from '../follow_card/follow_card.vue'
 import Conversation from '../conversation/conversation.vue'
 import Status from '../status/status.vue'
 import map from 'lodash/map'
+import { library } from '@fortawesome/fontawesome-svg-core'
+import { faCircleNotch } from '@fortawesome/free-solid-svg-icons'
+
+library.add(
+  faCircleNotch
+)
 
 const Search = {
   components: {

src/components/search/search.vue

@@ -24,7 +24,7 @@
       v-if="loading"
       class="text-center loading-icon"
     >
-      <i class="icon-spin3 animate-spin" />
+      <FAIcon icon="circle-notch" spin size="lg"/>
     </div>
     <div v-else-if="loaded">
       <div class="search-nav-heading">