Requested by Liance at https://en.wikipedia.org/wiki/Wikipedia_talk:WikiProject_Articles_for_creation#AfC-tailored_Welcome_template

• add a checkbox with functionality similar to the Teahouse invite option currently implemented in AFCH
• when ticked, would leave the welcome template {{Welcome draft}} above the AfC accept/decline message
• Welcome message should only be left if the user has not been welcomed by another editor yet