add general comment form

[mradamcox]

It would be helpful if people could submit general feedback directly through the site, as opposed to emailing the admin. This could also setup up as messages to the admin, so perhaps just an easy link to the existing internal messaging system? This wouldn't allow non-members to send feedback though, which would have pros and cons.

[BNAndras]

Could you set up an anonymous user who can only email the admin group? Then you can have a "message the admin" section that posts the message through the internal messaging system. That way everything is going through the same system that you fully control if you need to change any implementation details rather than juggling both the internal messaging and emails.