feat: Add global message search (#1385)

* feat: Search messages by content

* Fix search UI

* Add specs

* chore: Filter search results

* Update highlight logic

* Rename query to searchTerm

Co-authored-by: Sojan <sojan@pepalo.com>

app/javascript/dashboard/components/ChatList.vue

@@ -1,5 +1,6 @@
 <template>
   <div class="conversations-sidebar  medium-4 columns">
+    <slot></slot>
     <div class="chat-list__top">
       <h1 class="page-title">
         <woot-sidemenu-icon />
@@ -54,9 +55,6 @@
 </template>
 
 <script>
-/* eslint-env browser */
-/* eslint no-console: 0 */
-/* global bus */
 import { mapGetters } from 'vuex';
 
 import ChatFilter from './widgets/conversation/ChatFilter';