Fix Travis

@Hackwar this should fix this travis issues:

```
FILE: /home/travis/build/joomla/joomla-cms/libraries/cms/router/site.php
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FOUND 1 ERROR(S) AFFECTING 1 LINE(S)
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413 | ERROR | Expected 2 spaces after the longest type
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```
see: https://travis-ci.org/joomla/joomla-cms/jobs/34017263

The others are the `assertTag is deprecated` messages :D