Added option to have active users similar to standard forum software

This adds a checkbox to determine if the user would actually like all active forum users(ANYWHERE on the forum) to display... since that's how the active users widget works for every other forum...
no need to call this again since the results.users is an array of full user objects. can remove this line and the map above it and call

`callback(null, templates.parse(html, {active_users: results.users});`