Added spinner.

app/assets/javascripts/app/views/navigation.jst.eco

@@ -27,6 +27,7 @@
         <form class="navbar-search pull-left">
           <input class="search-query" type="search" value="" placeholder="<%- Ti('Search') %>"/>
         </form>
+        <div class="spinner"/>
 <% if @user: %>
         <ul class="nav pull-right">
         <% for item in @navbar_right: %>

app/assets/stylesheets/zzz.css

@@ -2,6 +2,16 @@ body {
   padding-top:60px;
 }
 
+.spinner {
+  float: left;
+  background:url("/assets/spinner.gif") no-repeat;
+  background-position: center center;
+  padding: 12px;
+  width: 10px;
+  height: 14px;
+  display: none;
+}
+
 /*
 #content > *:not(.active) {
   display: none !important;