WB 2.08.x

fixed Errorhandling for old class.database

! update upgrade-script first remove access files in an existing pages folder
before rebuilding them
! for security upgrade don't remove access files in root

Drop tables in installer fixed
Twig_Autoloader activated

some modifications concerning the new autoloader
Twig Template engine v.1.7.0
some droplets actualisized
unfinished changes in installer

last fixes for use of page_icon s.o.

! update upgrade-script, now don't overwrite existings values in settings
+ add field tooltip to table pages in installer
! change some module tool_icon.png (Tks to Stefek)
! add date_time string to backup_droplets.zip
- search and comment out founded require_once(WB_PATH."/framework/class.database.php"); ...

changed class Database into a Singleton-Class
added forgotten 'static' keyword in ModLanguage
removed version control from sm2 - include.php

some little corrections ModLanguage/Database/initialize.php

reorganisation of default theme of page-settings
added menu_icon_0 and menu_icon_1
update show_menu2 to handle the new icon fields (see README.de|en.txt)
add new droplet 'iParentIcon' for use with the new icons
added new module-depending language files (not complete yet) in admin/pages

renamed file class.database.php to Database.php
renamed class database into Database
classes SecurityException and SecDirectoryTraversalException added in globalExceptionHandler.php
CoreAutoloader() added in initialize.php
new Constants 'WB_REL' and 'DOCUMENT_ROOT' in initialize.php...