Remove Glyphicons third-party dependency.

(imported from commit 4f5f4e915370f3631c558f8fd7feefc79c357e50)

templates/zephyr/base.html

@@ -18,7 +18,6 @@
     <link href="/static/third/bootstrap/css/bootstrap.min.css" rel="stylesheet">
     <link href="/static/third/bootstrap/css/bootstrap-responsive.css" rel="stylesheet">
     <link href='https://fonts.googleapis.com/css?family=Droid+Sans:400,700' rel='stylesheet' type='text/css'>
-    <link href="/static/third/glyphicons/css/glyphicons.css" rel="stylesheet">
     <link href="/static/favicon.ico?v=2" rel="shortcut icon">
     {# We need to import jQuery before Bootstrap #}
     <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>