transition to Twig

templates/login.html

@@ -1,13 +1,13 @@
-{error?<h2 style="text-align:center">{error}</h2>}
+{% if error %}<h2 style="text-align:center">{{ error }}</h2>{% endif %}
 <form action="" method="post">
-{redirect?<input type="hidden" name="redirect" value="{redirect}" />}
+{% if redirect %}<input type="hidden" name="redirect" value="{{ redirect }}" />{% endif %}
 <table style="margin-top:25px;">
 	<tr>
 		<th>
 			Username
 		</th>
 		<td>
-			<input type="text" name="username" size="20" maxlength="30" value="{username}">
+			<input type="text" name="username" size="20" maxlength="30" value="{{ username }}">
 		</td>
 	</tr>
 	<tr>