[feature/module_services] Start using services for modules

This includes a module_interface and module_base for the modules.
Adding, moving, or managing modules doesn't work yet.

modules/module_interface.php

@@ -0,0 +1,99 @@
+<?php
+/**
+*
+* @package Board3 Portal v2.1
+* @copyright (c) 2013 Board3 Group ( www.board3.de )
+* @license http://opensource.org/licenses/gpl-license.php GNU Public License
+*
+*/
+
+namespace board3\portal\modules;
+
+/**
+* @ignore
+*/
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+/**
+* @package module_interface
+*/
+interface module_interface
+{
+	/**
+	* Get allowed columns
+	* Allowed columns: Just sum up your options (Exp: left + right = 10)
+	* top		1
+	* left		2
+	* center	4
+	* right		8
+	* bottom	16
+	*
+	* @return int Allowed columns
+	*/
+	public function get_allowed_columns();
+
+	/**
+	* Get module name
+	*
+	* @return string Module name, e.g. BOARD3_NEWS
+	*/
+	public function get_name();
+
+	/**
+	* Get default module image:
+	* file must be in "{T_THEME_PATH}/images/portal/"
+	*
+	* @return string Module image file
+	*/
+	public function get_image();
+
+	/**
+	* Get module language file
+	* File must be in "board3/portal/language/{$user->lang}/portal/" or
+	* this should return false.
+	*
+	* @return string|bool Language file or false
+	*/
+	public function get_language();
+
+	/**
+	* Get template file for side columns
+	*
+	* @param int $module_id Module's ID
+	*
+	* @return string Module template file
+	*/
+	public function get_template_side($module_id);
+
+	/**
+	* Get acp settings
+	*
+	* @param int $module_id Module's ID
+	*
+	* @return array ACP settings for module
+	*/
+	public function get_template_acp($module_id);
+
+	/**
+	* Install module
+	* Executes any additional commands for installing the module
+	*
+	* @param int $module_id Module's ID
+	*
+	* @return bool True if install was successful, false if not
+	*/
+	public function install($module_id);
+
+	/**
+	* Uninstall module
+	* Executes any additional commands for uninstalling the module
+	*
+	* @param int $module_id Module's ID
+	*
+	* @return bool True if uninstall was successful, false if not
+	*/
+	public function uninstall($module_id);
+}