Added try/except around cli utils in test_contentview

Discussed in previous pullrequest.
```make_content_view``` throws ```CLIFactoryError``` on error, so it is not necessary to use info to verify if content view was really created, because in that case exception would already have been thrown.
Eh. I'd rather see the closing `})` on a separate line, as doing so makes it easier for me to see the value (`True`) at a glance. I can live with this, though.