Added CAPTCHA on a form.

homepage/views/guestbook.pug

@@ -30,9 +30,12 @@ block content
 			span.checkbox
 				input(type='checkbox' id='hide-website' name='hide_website' checked)
 				label(for='hide-website') Hide website*
+		span.captcha
+			input(type='hidden', name='captcha_id' value=captcha_id)
+			img(src='/captcha/'+captcha_id+'/image', alt="CAPTCHA" width='160' height='40')
+			input(type='text' maxlength='6' placeholder='CAPTCHA' name='captcha_answer')
+			small Will be valid for next #[b 5] minutes.
 		small *Only I can see if set.
-		br
-		small NO links are allowed in a message.
 		input(type='submit' value='Send a post')
 	section#posts
 		if (posts)