Fix filters boolean logic

[phoebus-84]

On interfacer-gui we have a filters like this for resources: {notCustodian: id, orName: string, orNote: string}. It returns resources that respect the condition: notCoustodian or Name or Note. It would be useful to have something to express the statement: notCustodian and (name or note).

[protodeniz]

Yeah, it is sorta hard to get right. Those or* and not* prefixes were a quick workaround. I'll study and see what we can do about it.

At worst, we'll use a custom string format for the filters and parse it.