Conflicts:
	apps/calendar/js/loader.js
	apps/contacts/index.php
	apps/contacts/js/loader.js
	apps/files/js/files.js
	apps/files_sharing/sharedstorage.php
	lib/filesystemview.php

LDAP: check if php-ldap is installed. If not, give an error output. FIX: blank Users page when the module is not installed.

LDAP: split up LIB_LDAP into Access for LDAP interaction functions and Connection for configuration and resource management. Adjust user_ldap, group_ldap and the app accordingly.

LDAP: switch user backend from extending class OC_User_Backend to implementing OC_User_Interface for improved flexibility