Actually, if the feature is false it prints the following:
```
The tag "testete" doesnt exist
The tag "teaiogea" doesnt exist.....
```

From the code:
```
tag.errors.doesnt_exist = The tag "{0}" doesn't exist 
```

I searched throught the entire system (jsp/java/js) and didn't found a link to question.errors.tags.unexistant that I removed.

I think we can continue with the both tests but the **should_disallow...** needs to check if the **tag.errors.doesnt_exist** prints correctly.

What do you think?