Restore a trigger "onKunenaGetTopics"

[obsidev]

Pull Request for Issue #4643 .

Summary of Changes

Due to the modification in the Kunena core, some files (models) are not used anymore.
In the new core, the trigger "onKunenaGetTopics" is not more called, so the option "Select View: By Plugin" is not working anymore.

That patch will restore a trigger but will rename it in order to not generate side effect due to the modification in the parameters.

Testing Instructions

Create a Kunena menu and select the "By plugin" view mode.
In the header text, put "moderation".

In a plugin, put the trigger:

    public function onKunenaGetUserTopics($pluginmode, &$finder, &$order, &$categoryIds, $controller) {
        if($pluginmode != 'moderation')
            return;

        $finder->filterByHold(array(0,1));

        // Force all categories
        $categoryIds = null;

        $finder
            ->select('a.id')
            ->order('last_post_time', 1)
            ->where('a.first_post_userid', '>', '0');
    }

We removed some code for extra columns used by our moderation system

[810]

please fix codestyle. Add a space after if

[obsidev]

Sure

[obsidev]

I just remember that, in order to work properly, it also require a modification in the "librairies/kunena/forum/topic/finder.php" so the plugin can have access to the "select".

    public function select($data) {
        $this->query->select($data);
        return $this;
    }

[810]

I just remember that, in order to work properly, it also require a modification in the "librairies/kunena/forum/topic/finder.php" so the plugin can have access to the "select".
public function select($data) {
$this->query->select($data);
return $this;
}

Could you also add this on the pr