Improve turbolink spinner

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

app/assets/stylesheets/sections/header.scss

@@ -196,6 +196,8 @@ header {
 
     .turbolink-spinner {
       color: #FFF;
+      font-size: 22px;
+      margin-right: 10px;
     }
 
     .search {

app/views/layouts/_head_panel.html.haml

@@ -17,8 +17,7 @@
           %li.hidden-sm.hidden-xs
             %a
               %div.hide.turbolink-spinner
-                %i.icon-spinner.icon-spin
-                Loading...
+                %i.icon-refresh.icon-spin
           %li.hidden-sm.hidden-xs
             = render "layouts/search"
           %li.visible-sm.visible-xs

app/views/layouts/_public_head_panel.html.haml

@@ -19,5 +19,4 @@
         %li
           %a
             %div.hide.turbolink-spinner
-              %i.icon-spinner.icon-spin
-              Loading...
+              %i.icon-refresh.icon-spin