[uPermissions] Partial users commands done. (except permissions listong).

Signed-off-by: Nauthul <axel.evain@gmail.com>
[uPermissions] Minor command tweaks.

Signed-off-by: Nauthul <axel.evain@gmail.com>
[uPermissions] Minor bug fix.

Signed-off-by: Nauthul <axel.evain@gmail.com>
[uModify] Done block and item use protection.

Signed-off-by: Nauthul <axel.evain@gmail.com>