Get params directly

Signed-off-by: Michal Čihař <michal@cihar.com>
Remove not needed dummy variable

Signed-off-by: Michal Čihař <michal@cihar.com>
Simplify anonymous user creation

We should not really catch all exceptions here, the only thing we care
about is that anonymous user would be active.

Signed-off-by: Michal Čihař <michal@cihar.com>