WB 2.08.x

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...

add tool_icon.png to admintools

1. validation fix in print_footer, class.database
   ! replace settings and default header

! preparing new groups management and page settings
! upgrade-script insert or update page access files

1. fixed backup_droplets working with php as Apache Module (Tks to Ruebenwurzel)
   ! update function rm_full_dir in /framework/functions.php
   ! To disable Run-time notices and receive warnings