refactor: utilize favicon_tag()

Author: curbengh

layout/_partial/head.ejs

@@ -26,7 +26,7 @@
     <%- feed_tag(theme.rss) %>
   <% } %>
   <% if (theme.favicon){ %>
-    <link rel="icon" href="<%- theme.favicon %>">
+    <%- favicon_tag(theme.favicon) %>
   <% } %>
   <%- css('css/typing') %>
   <%- css('css/donate') %>

layout/index.ejs

@@ -13,9 +13,9 @@
       <% for (var key in theme.links) { %>
         <li>
 	  <% if (theme.icons){ %>
-            <a href="<%= theme.links[key] %>"><span class="fa fa-<%= key %>"></span></a>
+            <a href="<%- url_for(theme.links[key]) %>"><span class="fa fa-<%= key %>"></span></a>
 	  <% } else { %>
-	    <a href="<%= theme.links[key] %>"><%= key %></a>
+	    <a href="<%- url_for(theme.links[key]) %>"><%= key %></a>
 	  <% } %>
         </li>
       <% } %>