left_sidebar: Group topic markers and controls.

This also corrects a set of single quotes, on the href attribute in
the topic list-item template..

web/templates/more_topics.hbs

@@ -3,6 +3,7 @@
   {{#if more_topics_unread_count_muted}}more_topic_unreads_muted_only{{/if}}">
     <div class="topic-box">
         <a class="topic-name" tabindex="0">{{t "more topics" }}</a>
+        <div class="topic-markers-and-controls">
             {{#if more_topics_have_unread_mention_messages}}
                 <span class="unread_mention_info">
                     @
@@ -12,4 +13,5 @@
                 {{more_topics_unreads}}
             </span>
         </div>
+    </div>
 </li>

web/templates/topic_list_item.hbs

@@ -3,9 +3,10 @@
         <span class="sidebar-topic-check">
             {{topic_resolved_prefix}}
         </span>
-        <a href='{{url}}' class="topic-name" title="{{topic_name}}">
+        <a href="{{url}}" class="topic-name" title="{{topic_name}}">
             {{topic_display_name}}
         </a>
+        <div class="topic-markers-and-controls">
             {{#if contains_unread_mention}}
                 <span class="unread_mention_info">
                     @
@@ -17,6 +18,7 @@
             <span class="unread_count {{#if is_zero}}zero_count{{/if}}">
                 {{unread}}
             </span>
+        </div>
         <span class="sidebar-menu-icon topic-sidebar-menu-icon">
             <i class="zulip-icon zulip-icon-more-vertical" aria-hidden="true"></i>
         </span>