Text-CAPTCHA: added description how to input questions and answers.
Added Text-CAPTCHA on request. The captcha-text will be stored in temp/.captcha_text.txt
Added new CAPTCHA (calc_ttf_image). Changed call_captcha() to output a table-layout. Some minor changes to captcha-code.
Added preview-images for CAPTCHA. Improved security: CAPTCHAS can't be loaded from outside WB
Added keywords to files where they are missing
added new CAPTCHA and ASP (Advanced Spam Protection)