VOLDEV-40 | Removing or closing wall/forum threads causes red link on Recent Changes

https://wikia-inc.atlassian.net/browse/VOLDEV-40
@Grunny @michalroszka
You changed a lot of messages so they work with wikitext. Can we use wikitext here?
```php
$messages['en'] = [
   'wall-wiki-activity-on' => 'on [$1 $2]'
];

$messages['qqq'] = [
   'wall-wiki-activity-on' => 'Wiki Activity item. Parameters:
* $1 is URL address to wall page,
* $2 is wall owner',
];
```

or

```php
$messages['en'] = [
   'wall-wiki-activity-on' => 'on [[$1|$2]]'
];

$messages['qqq'] = [
   'wall-wiki-activity-on' => 'Wiki Activity item. Parameters:
* $1 is wall title with namespace,
* $2 is wall owner',
];
```