WB 2.08.x

! see Build 1986
also implemented in frontend account

1. bugfix missing trailing backtick in output_filter/input.php
2. bugfix wrong backticks in 'admin/media/upload.php
3. bugfix add missing language variable in account
   ! update form module, add class frm-fieldset to fieldset, restyle error box
   ! update captcha iframe attribute settings

1. bugfix redclare function in preferences_form
   ! add infobox, if you have to change the language before working in preferences

! all changes in folder account, Signup with confirmation Mail
! frontend.css now included by account script

! account split html and code
+ add signup activation registering
+ add missing icons in themes

! Now you can style account login with your frontend Template CSS
this change is in work for the whole account

! beginning update frontend account
! remove html markup from code

1. typofixes in DE languages files (Tks to Ruebenwurzel)

fixed print_error exit in frontend account