fixed some issues with CAPTCHA and ASP: Adjusted baseline of '*' in supplyed fonts to meet baseline of numbers. Added counter to ttf_image generation-loop. Removed now unneeded GD-lib checks. Improved ASP in news-module.
module news: added publish_until field to control the visibility of a news-posting by date and time
added new CAPTCHA and ASP (Advanced Spam Protection)
fixed bug in news module: Dont allow comments if commenting is disabled or post or post's group is inactive
fixed E_NOTICE-warning in news-module (SECTION_ID)
added again keywords to news modul files
Updated news modul with features from the advanced news modul