Use insert_into when possible

[Timshel]

Replace most replace_into with insert_into to avoid deleting a record to update it.

There is still two left :

• org_policy.rs#L130
• two_factor.rs#L99

But changing those would be more complex, the composite key could be used as primary instead of an uuid.
But at least for the OrgPolicy the uuid appears to be used when logging an event.