File Integrity Checks: no coherent bypass rules

There is no coherent and consistent bypass rules regarding files. We should try to implement something similar to the workflow warnings, partial blockers and blockers.

Sometimes you can bypass (e.g: ACL... but they are reinitialized to the old value). Sometimes you can not bypass (ex: deleting a file whihc is used).

When there is some multiple select (e.g: selecting a directory which is using a file in staging only and another directory with a file in live) the integrity error mentions that we could suppress the directory (warning only)... but finally it does not delete any of both directories. In such a case we should have some partial error (deleting only the guilty directory).

We also need to decide who can bypass file integrity checks. I would add a new role in the admin Center about it.

Of course root could always bypass all integrity checks (which is not the case currently if you try to delete a file used in live mode).