Added rudimentary HTTP interface

templates/user/login.html.ep

@@ -0,0 +1,19 @@
+% for ( $retry_msg // () ) {
+%     $_ = $_ eq 'authfailure' ? "Authentication failed: User does not exist "
+%                              . "or the password was wrong."
+%    : $_ eq 'loggedOut'       ? "You have been logged out. All session cookies "
+%                              . "are expired and deleted. If you want to re-login:"
+%    : undef;
+% }
+% title 'User login';
+
+% if ( $retry_msg ) {
+    <p class="error"><%= $retry_msg %></p>
+% }
+<form method="post" action="/login"><p>
+
+    User id: <input name="user" type="text" placeholder="user id or email" value="<%= param('user') %>"><br>
+    Password: <input name="password" type="password"><br>
+    <input type="submit" value="Login">
+
+</p></form>