VOLDEV-2 Add user right for being allowed to add article comments

[VOLDEV-2](https://wikia-inc.atlassian.net/browse/VOLDEV-2)
@Grunny @michalroszka 
Without a specific output format, wfMessage will default to `parse()`. This message is used below with `escaped()` and as mentioned there, can it be switched to wikitext links or Linker and make use of `parse()`?