Initial import of tasks application

This initial import is a heavily modified version of the code I had
here, as Arse was modified for other purposes in the meantime and the
application no longer worked with it.

In addition:
 * I did not import the user management part yet,
 * task dependencies are supported in-base, but there is no interface
for that yet.

includes/t-basics/pages.inc.php

@@ -0,0 +1,67 @@
+<?php
+
+abstract class AuthenticatedPage
+	extends HubPage
+{
+	public function __construct( $pages )
+	{
+		parent::__construct( $pages );
+		$this->addController( Loader::Ctrl( 'check_session' ) );
+	}
+
+	protected function getMenu( )
+	{
+		return array(
+			'items'		=> 'Items' ,
+			'tasks'		=> 'Tasks' ,
+			'logout'	=> 'Log out'
+		);
+	}
+}
+
+
+class Page_TasksHome
+	extends HTMLPage
+{
+
+	public function __construct( )
+	{
+		parent::__construct( );
+		$this->addController( Loader::Ctrl( 'home_page' ) );
+	}
+
+	protected function getMenu( )
+	{
+		return array();
+	}
+}
+
+
+class Page_TasksLogin
+	extends HTMLPage
+{
+
+	public function __construct()
+	{
+		parent::__construct( );
+		$this->addController( Loader::Ctrl( 'logged_out' ) );
+		$this->addController( Loader::Ctrl( 'log_in_form' ) );
+	}
+
+	protected function getMenu( )
+	{
+		return array();
+	}
+
+}
+
+
+class Page_TasksLogout
+	extends Page_Basic
+{
+	public function __construct( )
+	{
+		parent::__construct( );
+		$this->addController( Loader::Ctrl( 'logout' ) );
+	}
+}