modified getColumns() to get columns names with a prefix
fixed broken path=".."
using modified getColumns function to get all the by_ prefix columns
assign field to existing group
allow txp:article to select from txp_users table
allow creating articles with comments on by default
allow app_mode async for website not just admin
captcha
allow using captchas for contact forms
added event handler to change captcha image
changed undefined variable $web to $url