ISSUE SUMMARY:
If I add a link to the group discussion text box like:
www.medi-learn.de/pruefungsprotokolle/fa.../detailed.php?ID=159

This would be very important because if you add like 20 links you have to do all time "add link" etc....

Dear user,

Currently you hold JomSocial PRO license what means that we could support only ONE your domain/site.
Presently your supported domain/site is: jualda.com
And you request support for: medi-learn.de. I'm sorry but as it is different domain/site, so we can't support it at the moment.
But don't worry, you may change your supported domain/site (still you'll need to have valid reason for change).
Please post a domain change request here: www.jomsocial.com/forum/billing-issues

After your request is accepted, please, update this thread and make sure it has "Pending Support" status.

Additionally issue that you're reporting is known. Rich text editor that is currently in use doesn't convert URL into active link automatically upon save. You need to insert links using panel tool. If you think we should improve it, please, post your request here: www.jomsocial.com/uservoice

Hello

I did a "quick hack" if you want a solution for all other customers need this:
Line 2277 in view.hmtl.php of group

//add auto link
$matches="";
 $content = $discussion->message;
preg_match_all('!(((f|ht)tp(s)?://)[-a-zA-Zа-яА-Я()0-9@:%_+.~#?&;//=]+)!i', $content, $matches);
            
            foreach ($matches[0] as $key=>$link) {
                if (!preg_match('!<a(.*)'.$link.'(.*)/a>!i', $content))
                {
                    $content = str_replace($link, '<a href="'.$link.'" target="_blank">'.$link.'</a>', $content);
                }
            }
$discussion->message = $content;

Hi, Daniel.

Thank you for sharing it. I'll just add (for future references) that this is a core hack... what means it will be overwritten during next JS upgrade so you need to have copy of customized file.