[C2] Clean role table

[ywarnier]

We have removed the super_admin role in a previous commit, but the role table still contains.
Also there is no ANONYMOUS role, which is another issue.
Make sure all roles used/defined (and only those ones) are present in the role table.

[christianbeeznest]

It is checked with this commit 792abf3

Thanks for confirmation.

[ywarnier]

Works for me. Thanks.