One of the greatest features we had on 3.4.x was the "Mark as solved". Basically a button that the topic author or a moderator could click to mark which post solved the issue, highlighting this post. Additionally, I wanted a special badge to show up on the topic and list of topics indicating that the problem was solved.

However, 4.1.x doesn't have this feature, unless you configure the forum to be a Q&A forum, which I don't want.

Is there a way to incorporate this functionality back in future versions? Is there any plugin/app to do that?

Thanks.

Here you go!  

 

AWESOME!! Thanks @Hulu and, of course, @Adriano Faria!